Nature of Operations and Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Summary of Significant Accounting Policies	Nature of Operations and Summary of Significant Accounting Policies Nature of Operations. The accounting and reporting practices of First Business Financial Services, Inc. (the “Corporation”), its wholly-owned subsidiaries, First Business Bank (“FBB”), First Business Bank – Milwaukee (“FBB – Milwaukee”) and Alterra Bank (“Alterra”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). FBB, FBB – Milwaukee and Alterra are sometimes referred to together as the “Banks.” FBB operates as a commercial banking institution in the Madison, Wisconsin market, consisting primarily of Dane County and the surrounding areas, with loan production offices in Oshkosh, Appleton, Green Bay and Manitowoc,Wisconsin. FBB also offers trust and investment services through First Business Trust & Investments (“FBTI”), a division of FBB. FBB – Milwaukee operates as a commercial banking institution in the Milwaukee, Wisconsin market, consisting primarily of Waukesha County and the surrounding areas, with a loan production office in Kenosha, Wisconsin. Alterra operates as a commercial banking institution in the Kansas City market and the surrounding areas. The Banks provide a full range of financial services to businesses, business owners, executives, professionals and high net worth individuals. The Banks are subject to competition from other financial institutions and service providers and are also subject to state and federal regulations. FBB has the following wholly-owned subsidiaries: First Business Capital Corp. (“FBCC”), First Madison Investment Corp. (“FMIC”), First Business Equipment Finance, LLC (“FBEF”), Rimrock Road Investment Fund, LLC (“Rimrock Road”) and BOC Investment, LLC (“BOC”). FMIC is located in and was formed under the laws of the state of Nevada. FBB-Milwaukee has one subsidiary, FBB – Milwaukee Real Estate, LLC (“FBBMRE”). Basis of Financial Statement Presentation. The Consolidated Financial Statements include the accounts of the Corporation and its wholly-owned subsidiaries. In accordance with the provisions of Accounting Standards Codification (“ASC”) Topic 810, the Corporation’s ownership interest in FBFS Statutory Trust II (“Trust II”) has not been consolidated into the financial statements. All significant intercompany balances and transactions have been eliminated in consolidation. Management of the Corporation is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. Material estimates that could experience significant changes in the near-term include the value of foreclosed property, lease residuals, property under operating leases, securities, income taxes and the level of the allowance for loan and lease losses. Certain amounts in prior periods may have been reclassified to conform to current presentation. Subsequent events have been evaluated through the issuance of the Consolidated Financial Statements. No significant subsequent events have occurred through this date requiring adjustment to the financial statements or disclosures. Cash and Cash Equivalents. The Corporation considers federal funds sold, interest-bearing deposits and short-term investments that have original maturities of three months or less to be cash equivalents. Securities. The Corporation classifies its investment and mortgage-related securities as available-for-sale, held-to-maturity and trading. Debt securities that the Corporation has the positive intent and ability to hold to maturity are classified as held-to-maturity and are stated at amortized cost. Debt and equity securities bought expressly for the purpose of selling in the near term are classified as trading securities and are measured at fair value with unrealized gains and losses reported in earnings. Debt and equity securities not classified as held-to-maturity or as trading are classified as available-for-sale. Available-for-sale securities are measured at fair value with unrealized gains and losses reported as a separate component of stockholders’ equity, net of tax. Realized gains and losses, and declines in value judged to be other than temporary, are included in the consolidated statements of income as a component of non-interest income. The cost of securities sold is based on the specific identification method. The Corporation did not hold any trading securities at December 31, 2015 and 2014. Discounts and premiums on investment and mortgage-backed securities are accreted and amortized into interest income using the effective yield method over the weighted average life of the securities. Declines in the fair value of investment securities (with certain exceptions for debt securities noted below) that are deemed to be other-than-temporary are charged to earnings as a realized loss, and a new cost basis for the securities is established. In evaluating other-than-temporary impairment, management considers the length of time and extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, and the intent and ability of the Corporation to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value in the near term. Declines in the fair value of debt securities below amortized cost are deemed to be other-than-temporary in circumstances where: (1) the Corporation has the intent to sell a security; (2) it is more likely than not that the Corporation will be required to sell the security before recovery of its amortized cost basis; or (3) the Corporation does not expect to recover the entire amortized cost basis of the security. If the Corporation intends to sell a security or if it is more likely than not that the Corporation will be required to sell the security before recovery, an other-than-temporary impairment write-down is recognized in earnings equal to the difference between the security’s amortized cost basis and its fair value. If the Corporation does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the other-than-temporary impairment write-down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to all other factors, which is recognized in other comprehensive income. Loans Held for Sale. Residential real estate loans and the guaranteed portion of SBA loans which are originated and intended for sale in the secondary market in the foreseeable future are classified as held for sale. These loans are carried at the lower of cost or estimated market value in the aggregate. As assets specifically originated for sale, the origination of, disposition of, and gain/loss on these loans are classified as operating activities in the statement of cash flows. Fees received from the borrower and direct costs to originate the loan are deferred and recognized as part of the gain or loss on sale. There was $2.7 million and $1.3 million in loans held for sale outstanding at December 31, 2015 and 2014, respectively. Loans and Leases. Loans and leases which management has the intent and ability to hold for the foreseeable future or until maturity are reported at their outstanding principal balance with adjustments for partial charge-offs, the allowance for loan and lease losses, deferred fees or costs on originated loans and leases, and unamortized premiums or discounts on any purchased loans. Loans originated or purchased and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate. Unrealized losses on such loans are recognized through a valuation allowance by a charge to other non-interest income. Gains and losses on the sale of loans are also included in other non-interest income. A loan or a lease is accounted for as a troubled debt restructuring if the Corporation, for economic or legal reasons related to the borrower’s financial condition, grants a concession to the borrower that it would not otherwise consider. A troubled debt restructuring may involve the receipt of assets from the debtor in partial or full satisfaction of the loan or lease, or a modification of terms such as a reduction of the stated interest rate or face amount of the loan or lease, a reduction of accrued interest, an extension of the maturity date at a stated interest rate lower than the current market rate for a new loan or lease with similar risk, or some combination of these concessions. Restructured loans can involve loans remaining on non-accrual, moving to non-accrual, or continuing on accrual status, depending on individual facts and circumstances. Non-accrual restructured loans are included and treated with all other non-accrual loans. In addition, all accruing restructured loans are reported as troubled debt restructurings which are considered and accounted for as impaired loans. Generally, restructured loans remain on non-accrual until the borrower has attained a sustained period of repayment performance under the modified loan terms (generally a minimum of six months). However, performance prior to the restructuring, or significant events that coincide with the restructuring, are considered in assessing whether the borrower can meet the new terms and whether the loan should be returned to or maintained on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on non-accrual. Interest on non-impaired loans and leases is accrued and credited to income on a daily basis based on the unpaid principal balance and is calculated using the effective interest method. Per policy, a loan or a lease is considered impaired and placed on a non-accrual status when it becomes 90 days past due or it is doubtful that contractual principal and interest will be collected in accordance with the terms of the contract. A loan or lease is determined to be past due if the borrower fails to meet a contractual payment and will continue to be considered past due until all contractual payments are received. When a loan or lease is placed on non-accrual, the interest accrual is discontinued and previously accrued but uncollected interest is deducted from interest income. If collectability of the contractual principal and interest is in doubt, payments received are first applied to reduce loan principal. If collectability of the contractual payments is not in doubt, payments may be applied to interest for interest amounts due on a cash basis. As soon as it is determined with certainty that the principal of an impaired loan or lease is uncollectable either through collections from the borrower or disposition of the underlying collateral, the portion of the carrying balance that exceeds the estimated measurement value of the loan or lease is charged off. Loans or leases are returned to accrual status when they are brought current in terms of both principal and accrued interest due, have performed in accordance with contractual terms for a reasonable period of time, and when the ultimate collectability of total contractual principal and interest is no longer doubtful. Transfers of assets, including but not limited to participation interests in originated loans, that upon completion of the transfer satisfy the conditions to be reported as a sale, including legal isolation, are derecognized from the Consolidated Financial Statements. Transfers of assets that upon completion of the transfer do not meet the conditions of a sale are recorded on a gross basis with a secured borrowing identified to reflect the amount of the transferred interest. Loan and lease origination fees as well as certain direct origination costs are deferred and amortized as an adjustment to loan yields over the stated term of the loan or lease. Loans or leases that result from a refinance or restructuring, other than a troubled debt restructuring, where terms are at least as favorable to the Corporation as the terms for comparable loans to other borrowers with similar collection risks and result in an essentially new loan or lease, are accounted for as a new loan or lease. Any unamortized net fees, costs, or penalties are recognized when the new loan or lease is originated. Unamortized net loan or lease fees or costs for loans and leases that result from a refinance or restructure with only minor modifications to the original loan or lease contract are carried forward as a part of the net investment in the new loan or lease. For troubled debt restructurings all fees received in connection with a modification of terms are applied as a reduction of the loan or lease and any related costs, including direct loan origination costs, are charged to expense as incurred. The Corporation purchased an individual loan in 2013 and a group of loans in connection with the Alterra acquisition which have shown evidence of credit deterioration since origination. These purchased loans are recorded at fair value, such that there is no carryover of the seller’s allowance for loan losses. After acquisition, losses are recognized by an increase in the allowance for loan losses. Such purchased loans are accounted for individually. The Corporation estimates the amount and timing of expected cash flows for each purchased loan, and the expected cash flows in excess of fair value are recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a provision for loan loss is recorded. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest income. Allowance for Loan and Lease Losses. The allowance for loan and lease losses is maintained at a level that management deems appropriate to absorb probable and estimable losses inherent in the loan and lease portfolios. The methodology applied for determining inherent losses stems from current risk characteristics of the loan and lease portfolio, an assessment of individual impaired and other problem loans and leases, actual loss experience and adverse situations that may affect the borrower’s ability to repay. The methodology also focuses on evaluation of several factors for each portfolio category, including but not limited to: management’s ongoing review and grading of the loan and lease portfolios, consideration of delinquency experience, changes in the size of the loan and lease portfolios, existing economic conditions, level of loans and leases subject to more frequent review by management, changes in underlying collateral, concentrations of loans to specific industries, and other qualitative and quantitative factors that could affect credit losses. Some impaired and other loans and leases have risk characteristics that are unique to an individual borrower and the loss must be estimated on an individual basis. Other impaired and problem loans and leases may have risk characteristics similar to other loans and leases and bear similar inherent risk of loss. Such loans and leases, which are not individually reviewed and measured for impairment, are aggregated and historical loss statistics are used to determine the risk of loss. The measurement of the estimate of loss is reliant upon historical experience, information about the ability of the individual debtor to pay and the appraisal of loan collateral in light of current economic conditions. An estimate of loss is an approximation of what portion of all amounts receivable, according to the contractual terms of that receivable, is deemed uncollectible. Determination of the allowance is inherently subjective because it requires estimation of amounts and timing of expected future cash flows on impaired and other problem loans and leases, estimation of losses on types of loans and leases based on historical losses and consideration of current economic trends, both local and national. Based on management’s periodic review using all previously mentioned pertinent factors, a provision for loan and lease losses is charged to expense when it is determined an increase in the allowance for loan and lease losses is appropriate. A negative provision for loan and lease losses may be recognized if management determines a reduction in the level of allowance for loan and lease losses is appropriate. Loan and lease losses are charged against the allowance and recoveries are credited to the allowance. The allowance for loan and lease losses contains specific allowances established for expected losses on impaired loans and leases. Impaired loans and leases are defined as loans and leases for which, based on current information and events, it is probable that the Corporation will be unable to collect scheduled principal and interest payments according to the contractual terms of the loan or lease agreement. Loans and leases subject to impairment are defined as non-accrual and restructured loans and leases. Impaired loans and leases are evaluated on an individual basis to determine the amount of specific reserve or charge-off required, if any. Smaller balance (individually less than $50,000) loans and leases are collectively evaluated for impairment as allowed under applicable accounting standards. The measurement value of impaired loans and leases is determined based on the present value of expected future cash flows discounted at the loan’s effective interest rate (the contractual interest rate adjusted for any net deferred loan fees or costs, premium, or discount existing at the origination or acquisition of the loan), the market price of the loan or lease, or the fair value of the underlying collateral less costs to sell, if the loan or lease is collateral dependent. A loan or lease is collateral dependent if repayment is expected to be provided principally by the underlying collateral. A loan’s effective interest rate may change over the life of the loan based on subsequent changes in rates or indices or may be fixed at the rate in effect at the date the loan was determined to be impaired. Subsequent to the initial impairment, any significant change in the amount or timing of an impaired loan or lease’s future cash flows will result in a reassessment of the valuation allowance to determine if an adjustment is necessary. Measurements based on observable market price or fair value of the collateral may change over time and require a reassessment of the valuation allowance if there is a significant change in either measurement base. Any increase in the present value of expected future cash flows attributable to the passage of time is recorded as interest income accrued on the net carrying amount of the loan or lease at the effective interest rate used to discount the impaired loan or lease’s estimated future cash flows. For the years ended December 31, 2015, 2014 and 2013, no interest income was recognized due to the increase of the present value of future cash flows attributable to the passage of time. Any change in present value attributable to changes in the amount or timing of expected future cash flows is recorded as loan loss expense in the same manner in which impairment was initially recognized or as a reduction of loan loss expense that otherwise would be reported. Where the level of loan or lease impairment is measured using observable market price or fair value of collateral, any change in the observable market price of an impaired loan or lease or fair value of the collateral of an impaired collateral-dependent loan or lease is recorded as loan loss expense in the same manner in which impairment was initially recognized. Any increase in the observable market value of the impaired loan or lease or fair value of the collateral in an impaired collateral-dependent loan or lease is recorded as a reduction in the amount of loan loss expense that otherwise would be reported. Net Investment in Direct Financing Leases. Net investment in direct financing lease agreements represents total undiscounted payments plus estimated unguaranteed residual value (approximating 3% to 20% of the cost of the related equipment) and is recorded as lease receivables when the lease is signed and the leased property is delivered to the client. The excess of the minimum lease payments and residual values over the cost of the equipment is recorded as unearned lease income. Unearned lease income is recognized over the term of the lease on a basis which results in an approximate level rate of return on the unrecovered lease investment. Lease payments are recorded when due under the lease contract. Residual values are established at lease inception equal to the estimated value to be received from the equipment following termination of the initial lease and such estimated value considers all relevant information and circumstances regarding the equipment. In estimating the equipment’s fair value at lease termination, the Corporation relies on internally or externally prepared appraisals, published sources of used equipment prices and historical experience adjusted for known current industry and economic trends. The Corporation’s estimates are periodically reviewed to ensure reasonableness; however, the amounts the Corporation will ultimately realize could differ from the estimated amounts. When there are other than temporary declines in the Corporation’s carrying amount of the unguaranteed residual value, the carrying value is reduced and charged to non-interest expense. Operating Leases. Machinery and equipment are leased to clients under operating leases and are recorded at cost. Equipment under such leases is depreciated over the estimated useful life or term of the lease, if shorter. The impairment loss, if any, would be charged to expense in the period it becomes evident. Rental income is recorded on the straight-line accrual basis as other non-interest income. Leasehold Improvements and Equipment. The cost of capitalized leasehold improvements is amortized on the straight-line method over the lesser of the term of the respective lease or estimated economic life. Equipment is stated at cost less accumulated depreciation and amortization which is calculated by the straight-line method over the estimated useful lives of three to ten years. Maintenance and repair costs are charged to expense as incurred. Improvements which extend the useful life are capitalized and depreciated over the remaining useful life of the assets. Foreclosed Properties. Property acquired by repossession, foreclosure or by deed in lieu of foreclosure is carried at the lower of the recorded investment in the loan at the time of acquisition or the fair value of the underlying property, less costs to sell. Any write-down in the carrying value of a loan or lease at the time of acquisition is charged to the allowance for loan and lease losses. Any subsequent write-downs to reflect current fair value, as well as gains and losses on disposition and revenues are recorded in non-interest expense. Costs relating to the development and improvement of the property are capitalized while holding period costs are charged to other non-interest expense. Bank-Owned Life Insurance. Bank-owned life insurance (“BOLI”) is reported at the amount that would be realized if the life insurance policies were surrendered on the balance sheet date. BOLI policies owned by the Banks are purchased with the objective to fund certain future employee benefit costs with the death benefit proceeds. The cash surrender value of such policies is recorded in cash surrender value of life insurance on the consolidated balance sheets and changes in the value are recorded in non-interest income. The total death benefit of all of the BOLI policies was $67.1 million as of December 31, 2015. There are no restrictions on the use of BOLI proceeds nor are there any contractual restrictions on the ability to surrender the policy. As of each of December 31, 2015 and 2014, there were no borrowings against the cash surrender value of the BOLI policies. Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) Stock. The Banks are required to maintain FHLB stock as members of the FHLB, and in amounts as required by these institutions. Alterra, as a state chartered member of the Federal Reserve Bank of Kansas City, is required to own shares of FRB stock. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other marketable equity securities and their fair value is equal to cost. At December 31, 2015, and 2014, the Banks had FHLB stock of $1.8 million. Alterra had FRB stock of $1.1 million and $533,000 at December 31, 2015 and 2014, respectively. The Corporation periodically evaluates its holding in FHLB and FRB stock for impairment. Should the stock be impaired, it would be written down to its estimated fair value. There were no impairments recorded on FHLB and FRB stock during the years ended December 31, 2015 and 2014. Goodwill and Other Intangible Assets. The excess of the cost of the acquisition over the fair value of the net assets acquired consists primarily of goodwill, core deposit intangibles and loan servicing rights. Core deposit intangibles have estimated finite lives and are amortized on an accelerated basis to expense over a period of seven years. Loan servicing rights, when purchased, are initially recorded at fair value and subsequently amortized in proportion to and over the period of estimated net servicing income. The Corporation reviews other intangible assets for impairment at least annually, or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, in which case an impairment charge would be recorded. Goodwill is not amortized but is subject to impairment tests on at least an annual basis, and more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying amount (including goodwill). An initial qualitative evaluation is made to assess the likelihood of impairment and determine whether further quantitative testing to calculate the fair value is necessary. When the qualitative evaluation indicates that impairment is more likely than not, quantitative testing is required whereby the fair value of each reporting unit is calculated and compared to the recorded book value, “step one.” If the calculated fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and “step two” is not considered necessary. If the carrying value of a reporting unit exceeds its calculated fair value, the impairment test continues (“step two”) by comparing the carrying value of the reporting unit’s goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying value of goodwill exceeds the implied fair value of goodwill. See Note 6 for additional information on goodwill and other intangible assets. Other Investments. The Corporation owns certain equity investments in other corporate organizations which are not consolidated because the Corporation does not own more than a 50% interest or exercise control over the organization. Such investments are not variable interest entities. Investments in corporations representing at least a 20% interest are generally accounted for using the equity method and investments in corporations representing less than 20% interest are generally accounted for at cost. Investments in limited partnerships representing from at least a 3% up to a 50% interest in the entity are generally accounted for using the equity method and investments in limited partnerships representing less than 3% are generally accounted for at cost. All of these investments are periodically evaluated for impairment. Should an investment be impaired, it would be written down to its estimated fair value. The equity investments are reported in other assets and the income and expense from such investments, if any, is reported in non-interest income and non-interest expense. Derivative Instruments. The Corporation uses derivative instruments to protect against the risk of adverse price or interest rate movements on the value of certain assets, liabilities, future cash flows and economic hedges for written client derivative contracts. Derivative instruments represent contracts between parties that usually require little or no initial net investment and result in one party delivering cash to the other party based on a notional amount and an underlying as specified in the contract and may be subject to master netting agreements. A notional amount represents the number of units of a specific item, such as currency units. An underlying represents a variable, such as an interest rate. The amount of cash delivered from one party to the other is determined based on the interaction of the notional amount of the contract with the underlying. Market risk is the risk of loss arising from an adverse change in interest rates, exchange rates or equity prices. The Corporation’s primary market risk is interest rate risk. Instruments designed to manage interest rate risk include interest rate swaps, interest rate options and interest rate caps and floors with indices that relate to the pricing of specific assets and liabilities. The nature and volume of the derivative instruments used to manage interest rate risk depend on the level and type of assets and liabilities on the balance sheet and the risk management strategies for the current and anticipated rate environments. Counterparty risk with respect to derivative instruments occurs when a counterparty to a derivative contract with an unrealized gain fails to perform according to the terms of the agreement. Counterparty risk is managed by limiting the counterparties to highly rated dealers, requiring collateral postings when values are in deficit positions, applying uniform credit standards to all activities with credit risk and monitoring the size and the maturity structure of the derivative portfolio. All derivative instruments are to be carried at fair value on the consolidated balance sheets. The accounting for the gain or loss due to changes in the fair value of a derivative instrument depends on whether the derivative instrument qualifies as a hedge. If the derivative instrument does not qualify as a hedge, the gains or losses are reported in earnings when they occur. However, if the derivative instrument qualifies as a hedge, the accounting varies based on the type of risk being hedged. In 2015 and 2014, the Corporation solely utilized interest rate swaps which did not qualify for hedge accounting and therefore all changes in fair value and gains and losses on these instruments were reported in earnings as they occurred. The effects of netting arrangements are disclosed within the Notes of the Consolidated Financial Statements. Income Taxes. Deferred income tax assets and liabilities are computed annually for temporary differences in timing between the financial statement and tax basis of assets and liabilities that result in taxable or deductible amounts in the future based on enacted tax law and rates applicable to periods in which the differences are expected to affect taxable income. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversals of deferred tax liabilities, appropriate tax planning strategies and projections for future taxable income over the period which the deferred tax assets are deductible. When necessary, valuation allowances are established to reduce deferred tax assets to the realizable amount. Management believes it is more likely than not that the Corporation will realize the benefits of these deductible differences, net of the existing valuation allowances. Income tax expense or benefit represents the tax payable or tax refundable for a period, adjusted by the applicable change in deferred tax assets and liabilities for that period. The Corporation and its subsidiaries file a consolidated federal income tax return and separate state income tax returns. Tax sharing agreements allocate taxes to each entity for the settlement of intercompany taxes. The Corporation applies a more likely than not standard to each of its tax positions when determining the amount of tax expense or benefit to record in its financial statements. Unrecognized tax benefits are recorded in other liabilities. The Corporation recognizes accrued interest relating to unrecognized tax benefits in income tax expense and penalties in other non-interest expense. Other Comprehensive Income or Loss. Comprehensive income or loss, shown as a separate financial statement, includes net income or loss, changes in unrealized holding gains and losses on available for sale securities, changes in deferred gains and losses on investment securities transferred from available for sale to held to maturity, if any, changes in unrealized gains and losses associated with cash flow hedging instruments, if any, and the amortization of deferred gains and losses associated with terminated cash flow hedges, if any. For the year ended December 31, 2015, there were no items requiring reclassification out of accumulated other comprehensive income. Earnings Per Share. Earnings per common share (“EPS”) is computed using the two-class method. Basic EPS is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding for the period, excluding any participating securities. Participating securities include unvested restricted shares. Unvested restricted shares are considered participating securities because holders of these securities receive non-forfeitable dividends at the same rate as the holders of the Corporation’s common stock. Diluted EPS is computed by dividing net income allocated to common shares adjusted for reallocation of undistributed earnings of unvested restricted shares by the weighted average number of common shares determined for the basic EPS plus the dilutive effect of common stock equivalents using the treasury stock method based on the average market price for the period. Some stock options are anti-dilutive and therefore are not included in the calculation of diluted EPS. Segments and Related Information. The Corporation is required to report each operating segment based on materiality thresholds of ten percent or more of certain amounts, such as revenue. Additionally, the Corporation is required to report separate operating segments until the revenue attributable to such segments is at least 75 percent of total consolidated revenue. The Corporation provides a broad range of financial services to individuals and companies in the Midwest. These services include demand, time, and savings products, the sale of certain non-deposit financial products and commercial and retail lending, leasing and trust services. While the Corporation’s chief decision-maker monitors the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a corporate-wide basis. The Corporation’s business units have similar basic characteristics in the nature of the products, production processes and type or class of client for products or services; therefore, these business units are considered one operating segment. Stock Options. Prior to January 1, 2006, the Corporation accounted for stock-based compensation using the intrinsic value method. Under the intrinsic value method, compensation expense for employee stock options was generally not recognized if the exercise price of the option equaled or exceeded the fair market value of the stock on the date of grant. On January 1, 2006, the Corporation adopted ASC Topic 718 using the prospective method as stock options were only granted by the Corporation prior to meeting the definition of a public entity. Under the prospective method, ASC Topic 718 must only be applied to the extent that those awards are subsequently modified, repurchased or canceled. No stock options have been granted since the Corporation met the definition of a public entity and no stock options have been modified, repurchased or cancelled subsequent to the adoption of ASC Topic 718. Therefore, no stock-based compensation was recognized in the consolidated statements of income for the years ended December 31, 2015 or 2014, except with respect to restricted stock awards. Upon vesting of any options subject to ASC Topic 718, the benefits of tax deductions in excess of recognized compensation expense will be reported as a financing cash flow, rather than as an operating cash flow. Recent Accounting Pronouncements In February 2015, the FASB issued ASU 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis.” This ASU changes the way reporting enterprises evaluate whether (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity (“VIE”), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. It also eliminates the VIE consolidation model based on majority exposure to variability that applied to certain investment companies and similar entities. The new guidance excludes money market funds that are required to comply with Rule 2a-7 of the Investment Company Act of 1940 and similar entities from the U.S. GAAP consolidation requirements. The new consolidation guidance is effective for public business entities for annual and interim periods in fiscal years beginning after December 15, 2015. At the effective date, all previous consolidation analysis that the guidance affects must be reconsidered. This includes the consolidation analysis for all VIEs and for all limited partnerships and similar entities that previously were consolidated by the general partner even though the entities were not VIEs. Early adoption is permitted, including early adoption in an interim period. If a reporting enterprise chooses to early adopt in an interim period, adjustments resulting from the revised consolidation analysis must be reflected as of the beginning of the fiscal year that includes that interim period. The Corporation intends to adopt the standard during the first quarter of 2016, as required, and with no expected material impact on its consolidated results of operations, financial position, or liquidity. In August 2015, the FASB issued ASU No. 2015-15, “Interest-Imputation of Interest (Subtopic 835-30), with an effective date for annual reporting periods beginning after December 15, 2016. In April 2015, the FASB issued ASU 2015-03, “Interest - Imputation of Interest (Subtopic 835-30) that intends to simplify the presentation of debt issuance costs. This ASU is also effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. ASU 2015-15 further addresses the presentation of debt issuance costs related to line-of-credit-arrangements and allows for an entity to present the debt issuance costs as an asset and amortize ratably over the term of the line-of-credit arrangement. The Corporation intends to adopt the standard during the first quarter of 2016, as required, and with no expected material impact on the its consolidated results of operations, financial position, or liquidity. In August 2015, the FASB issued ASU No. 2015-14, “Revenue from Contracts with Customers (Topic 606).” In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” with an original effective date for annual reporting periods beginning after December 15, 2016. The ASU is a converged standard between the FASB and the IASB that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The primary objective of the ASU is revenue recognition that represents the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2015-14 deferred the effective date of ASU 2014-09 to annual and interim reporting periods in fiscal years beginning after December 15, 2017. Earlier application is permitted only as of annual and interim reporting periods in fiscal years beginning after December 15, 2016. The Corporation is in the process of evaluating the impact of this standard but does not expect this standard to have a material impact on the Corporation’s consolidated results of operations, financial position, or liquidity. In September 2015, the FASB issued ASU No. 2015-16, “Business Combinations (Topic 805).” The ASU intends to simplify the accounting for measurement adjustments to prior business combinations. The amendment requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The acquirer must record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. The amendment also requires an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. This amendment is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments should be applied prospectively to adjustments to provisional amounts that occur after the effective date of this amendment with earlier application permitted for financial statements that have not been issued. The Corporation intends to adopt the standard during the first quarter of 2016, as required, and with no expected material impact on its consolidated results of operations, financial position, or liquidity. In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments (Subtopic 825-10).” The ASU amends certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This amendment supersedes the guidance to classify equity securities with readily determinable fair values into different categories, requires equity securities to be measured at fair value with changes in the fair value recognized through net income, and simplifies the impairment assessment of equity investments without readily determinable fair values. The amendment requires public business entities that are required to disclose the fair value of financial instruments measured at amortized cost on the balance sheet to measure that fair value using the exit price notion. The amendment requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option. The amendment requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes to the financial statements. The amendment reduces diversity in current practice by clarifying that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. This amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Entities should apply the amendment by means of a cumulative-effect adjustment as of the beginning of the fiscal year of adoption, with the exception of the amendment related to equity securities without readily determinable fair values, which should be applied prospectively to equity investments that exist as of the date of adoption. The Corporation intends to adopt the accounting standard during the first quarter of 2018, as required, and is currently evaluating the impact on its results of operations, financial position, and liquidity. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” The ASU intends to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities and disclosing key information about leasing arrangements. The ASU will require lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. The new lease guidance simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. The ASU is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. The Corporation is currently evaluating the impact on its results of operations, financial position, and liquidity.

Nature of Operations and Summary of Significant Accounting Policies

Nature of Operations. The accounting and reporting practices of First Business Financial Services, Inc. (the “Corporation”), its wholly-owned subsidiaries, First Business Bank (“FBB”), First Business Bank – Milwaukee (“FBB – Milwaukee”) and Alterra Bank (“Alterra”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). FBB, FBB – Milwaukee and Alterra are sometimes referred to together as the “Banks.” FBB operates as a commercial banking institution in the Madison, Wisconsin market, consisting primarily of Dane County and the surrounding areas, with loan production offices in Oshkosh, Appleton, Green Bay and Manitowoc,Wisconsin. FBB also offers trust and investment services through First Business Trust & Investments (“FBTI”), a division of FBB. FBB – Milwaukee operates as a commercial banking institution in the Milwaukee, Wisconsin market, consisting primarily of Waukesha County and the surrounding areas, with a loan production office in Kenosha, Wisconsin. Alterra operates as a commercial banking institution in the Kansas City market and the surrounding areas. The Banks provide a full range of financial services to businesses, business owners, executives, professionals and high net worth individuals. The Banks are subject to competition from other financial institutions and service providers and are also subject to state and federal regulations. FBB has the following wholly-owned subsidiaries: First Business Capital Corp. (“FBCC”), First Madison Investment Corp. (“FMIC”), First Business Equipment Finance, LLC (“FBEF”), Rimrock Road Investment Fund, LLC (“Rimrock Road”) and BOC Investment, LLC (“BOC”). FMIC is located in and was formed under the laws of the state of Nevada. FBB-Milwaukee has one subsidiary, FBB – Milwaukee Real Estate, LLC (“FBBMRE”).

Basis of Financial Statement Presentation. The Consolidated Financial Statements include the accounts of the Corporation and its wholly-owned subsidiaries. In accordance with the provisions of Accounting Standards Codification (“ASC”) Topic 810, the Corporation’s ownership interest in FBFS Statutory Trust II (“Trust II”) has not been consolidated into the financial statements. All significant intercompany balances and transactions have been eliminated in consolidation.

Management of the Corporation is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. Material estimates that could experience significant changes in the near-term include the value of foreclosed property, lease residuals, property under operating leases, securities, income taxes and the level of the allowance for loan and lease losses. Certain amounts in prior periods may have been reclassified to conform to current presentation. Subsequent events have been evaluated through the issuance of the Consolidated Financial Statements. No significant subsequent events have occurred through this date requiring adjustment to the financial statements or disclosures.

Cash and Cash Equivalents. The Corporation considers federal funds sold, interest-bearing deposits and short-term investments that have original maturities of three months or less to be cash equivalents.

Securities. The Corporation classifies its investment and mortgage-related securities as available-for-sale, held-to-maturity and trading. Debt securities that the Corporation has the positive intent and ability to hold to maturity are classified as held-to-maturity and are stated at amortized cost. Debt and equity securities bought expressly for the purpose of selling in the near term are classified as trading securities and are measured at fair value with unrealized gains and losses reported in earnings. Debt and equity securities not classified as held-to-maturity or as trading are classified as available-for-sale. Available-for-sale securities are measured at fair value with unrealized gains and losses reported as a separate component of stockholders’ equity, net of tax. Realized gains and losses, and declines in value judged to be other than temporary, are included in the consolidated statements of income as a component of non-interest income. The cost of securities sold is based on the specific identification method. The Corporation did not hold any trading securities at December 31, 2015 and 2014.

Discounts and premiums on investment and mortgage-backed securities are accreted and amortized into interest income using the effective yield method over the weighted average life of the securities.

Declines in the fair value of investment securities (with certain exceptions for debt securities noted below) that are deemed to be other-than-temporary are charged to earnings as a realized loss, and a new cost basis for the securities is established. In evaluating other-than-temporary impairment, management considers the length of time and extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, and the intent and ability of the Corporation to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value in the near term. Declines in the fair value of debt securities below amortized cost are deemed to be other-than-temporary in circumstances where: (1) the Corporation has the intent to sell a security; (2) it is more likely than not that the Corporation will be required to sell the security before recovery of its amortized cost basis; or (3) the Corporation does not expect to recover the entire amortized cost basis of the security. If the Corporation intends to sell a security or if it is more likely than not that the Corporation will be required to sell the security before recovery, an other-than-temporary impairment write-down is recognized in earnings equal to the difference between the security’s amortized cost basis and its fair value. If the Corporation does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the other-than-temporary impairment write-down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to all other factors, which is recognized in other comprehensive income.

Loans Held for Sale. Residential real estate loans and the guaranteed portion of SBA loans which are originated and intended for sale in the secondary market in the foreseeable future are classified as held for sale. These loans are carried at the lower of cost or estimated market value in the aggregate. As assets specifically originated for sale, the origination of, disposition of, and gain/loss on these loans are classified as operating activities in the statement of cash flows. Fees received from the borrower and direct costs to originate the loan are deferred and recognized as part of the gain or loss on sale. There was $2.7 million and $1.3 million in loans held for sale outstanding at December 31, 2015 and 2014, respectively.

Loans and Leases. Loans and leases which management has the intent and ability to hold for the foreseeable future or until maturity are reported at their outstanding principal balance with adjustments for partial charge-offs, the allowance for loan and lease losses, deferred fees or costs on originated loans and leases, and unamortized premiums or discounts on any purchased loans. Loans originated or purchased and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate. Unrealized losses on such loans are recognized through a valuation allowance by a charge to other non-interest income. Gains and losses on the sale of loans are also included in other non-interest income.

A loan or a lease is accounted for as a troubled debt restructuring if the Corporation, for economic or legal reasons related to the borrower’s financial condition, grants a concession to the borrower that it would not otherwise consider. A troubled debt restructuring may involve the receipt of assets from the debtor in partial or full satisfaction of the loan or lease, or a modification of terms such as a reduction of the stated interest rate or face amount of the loan or lease, a reduction of accrued interest, an extension of the maturity date at a stated interest rate lower than the current market rate for a new loan or lease with similar risk, or some combination of these concessions. Restructured loans can involve loans remaining on non-accrual, moving to non-accrual, or continuing on accrual status, depending on individual facts and circumstances. Non-accrual restructured loans are included and treated with all other non-accrual loans. In addition, all accruing restructured loans are reported as troubled debt restructurings which are considered and accounted for as impaired loans. Generally, restructured loans remain on non-accrual until the borrower has attained a sustained period of repayment performance under the modified loan terms (generally a minimum of six months). However, performance prior to the restructuring, or significant events that coincide with the restructuring, are considered in assessing whether the borrower can meet the new terms and whether the loan should be returned to or maintained on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on non-accrual.

Interest on non-impaired loans and leases is accrued and credited to income on a daily basis based on the unpaid principal balance and is calculated using the effective interest method. Per policy, a loan or a lease is considered impaired and placed on a non-accrual status when it becomes 90 days past due or it is doubtful that contractual principal and interest will be collected in accordance with the terms of the contract. A loan or lease is determined to be past due if the borrower fails to meet a contractual payment and will continue to be considered past due until all contractual payments are received. When a loan or lease is placed on non-accrual, the interest accrual is discontinued and previously accrued but uncollected interest is deducted from interest income. If collectability of the contractual principal and interest is in doubt, payments received are first applied to reduce loan principal. If collectability of the contractual payments is not in doubt, payments may be applied to interest for interest amounts due on a cash basis. As soon as it is determined with certainty that the principal of an impaired loan or lease is uncollectable either through collections from the borrower or disposition of the underlying collateral, the portion of the carrying balance that exceeds the estimated measurement value of the loan or lease is charged off. Loans or leases are returned to accrual status when they are brought current in terms of both principal and accrued interest due, have performed in accordance with contractual terms for a reasonable period of time, and when the ultimate collectability of total contractual principal and interest is no longer doubtful.

Transfers of assets, including but not limited to participation interests in originated loans, that upon completion of the transfer satisfy the conditions to be reported as a sale, including legal isolation, are derecognized from the Consolidated Financial Statements. Transfers of assets that upon completion of the transfer do not meet the conditions of a sale are recorded on a gross basis with a secured borrowing identified to reflect the amount of the transferred interest.

Loan and lease origination fees as well as certain direct origination costs are deferred and amortized as an adjustment to loan yields over the stated term of the loan or lease. Loans or leases that result from a refinance or restructuring, other than a troubled debt restructuring, where terms are at least as favorable to the Corporation as the terms for comparable loans to other borrowers with similar collection risks and result in an essentially new loan or lease, are accounted for as a new loan or lease. Any unamortized net fees, costs, or penalties are recognized when the new loan or lease is originated. Unamortized net loan or lease fees or costs for loans and leases that result from a refinance or restructure with only minor modifications to the original loan or lease contract are carried forward as a part of the net investment in the new loan or lease. For troubled debt restructurings all fees received in connection with a modification of terms are applied as a reduction of the loan or lease and any related costs, including direct loan origination costs, are charged to expense as incurred.

The Corporation purchased an individual loan in 2013 and a group of loans in connection with the Alterra acquisition which have shown evidence of credit deterioration since origination. These purchased loans are recorded at fair value, such that there is no carryover of the seller’s allowance for loan losses. After acquisition, losses are recognized by an increase in the allowance for loan losses. Such purchased loans are accounted for individually. The Corporation estimates the amount and timing of expected cash flows for each purchased loan, and the expected cash flows in excess of fair value are recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference).

Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a provision for loan loss is recorded. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest income.

Allowance for Loan and Lease Losses. The allowance for loan and lease losses is maintained at a level that management deems appropriate to absorb probable and estimable losses inherent in the loan and lease portfolios. The methodology applied for determining inherent losses stems from current risk characteristics of the loan and lease portfolio, an assessment of individual impaired and other problem loans and leases, actual loss experience and adverse situations that may affect the borrower’s ability to repay. The methodology also focuses on evaluation of several factors for each portfolio category, including but not limited to: management’s ongoing review and grading of the loan and lease portfolios, consideration of delinquency experience, changes in the size of the loan and lease portfolios, existing economic conditions, level of loans and leases subject to more frequent review by management, changes in underlying collateral, concentrations of loans to specific industries, and other qualitative and quantitative factors that could affect credit losses. Some impaired and other loans and leases have risk characteristics that are unique to an individual borrower and the loss must be estimated on an individual basis. Other impaired and problem loans and leases may have risk characteristics similar to other loans and leases and bear similar inherent risk of loss. Such loans and leases, which are not individually reviewed and measured for impairment, are aggregated and historical loss statistics are used to determine the risk of loss.

The measurement of the estimate of loss is reliant upon historical experience, information about the ability of the individual debtor to pay and the appraisal of loan collateral in light of current economic conditions. An estimate of loss is an approximation of what portion of all amounts receivable, according to the contractual terms of that receivable, is deemed uncollectible. Determination of the allowance is inherently subjective because it requires estimation of amounts and timing of expected future cash flows on impaired and other problem loans and leases, estimation of losses on types of loans and leases based on historical losses and consideration of current economic trends, both local and national. Based on management’s periodic review using all previously mentioned pertinent factors, a provision for loan and lease losses is charged to expense when it is determined an increase in the allowance for loan and lease losses is appropriate. A negative provision for loan and lease losses may be recognized if management determines a reduction in the level of allowance for loan and lease losses is appropriate. Loan and lease losses are charged against the allowance and recoveries are credited to the allowance.

The allowance for loan and lease losses contains specific allowances established for expected losses on impaired loans and leases. Impaired loans and leases are defined as loans and leases for which, based on current information and events, it is probable that the Corporation will be unable to collect scheduled principal and interest payments according to the contractual terms of the loan or lease agreement. Loans and leases subject to impairment are defined as non-accrual and restructured loans and leases.

Impaired loans and leases are evaluated on an individual basis to determine the amount of specific reserve or charge-off required, if any. Smaller balance (individually less than $50,000) loans and leases are collectively evaluated for impairment as allowed under applicable accounting standards.

The measurement value of impaired loans and leases is determined based on the present value of expected future cash flows discounted at the loan’s effective interest rate (the contractual interest rate adjusted for any net deferred loan fees or costs, premium, or discount existing at the origination or acquisition of the loan), the market price of the loan or lease, or the fair value of the underlying collateral less costs to sell, if the loan or lease is collateral dependent. A loan or lease is collateral dependent if repayment is expected to be provided principally by the underlying collateral. A loan’s effective interest rate may change over the life of the loan based on subsequent changes in rates or indices or may be fixed at the rate in effect at the date the loan was determined to be impaired.

Subsequent to the initial impairment, any significant change in the amount or timing of an impaired loan or lease’s future cash flows will result in a reassessment of the valuation allowance to determine if an adjustment is necessary. Measurements based on observable market price or fair value of the collateral may change over time and require a reassessment of the valuation allowance if there is a significant change in either measurement base. Any increase in the present value of expected future cash flows attributable to the passage of time is recorded as interest income accrued on the net carrying amount of the loan or lease at the effective interest rate used to discount the impaired loan or lease’s estimated future cash flows. For the years ended December 31, 2015, 2014 and 2013, no interest income was recognized due to the increase of the present value of future cash flows attributable to the passage of time. Any change in present value attributable to changes in the amount or timing of expected future cash flows is recorded as loan loss expense in the same manner in which impairment was initially recognized or as a reduction of loan loss expense that otherwise would be reported. Where the level of loan or lease impairment is measured using observable market price or fair value of collateral, any change in the observable market price of an impaired loan or lease or fair value of the collateral of an impaired collateral-dependent loan or lease is recorded as loan loss expense in the same manner in which impairment was initially recognized. Any increase in the observable market value of the impaired loan or lease or fair value of the collateral in an impaired collateral-dependent loan or lease is recorded as a reduction in the amount of loan loss expense that otherwise would be reported.

Net Investment in Direct Financing Leases. Net investment in direct financing lease agreements represents total undiscounted payments plus estimated unguaranteed residual value (approximating 3% to 20% of the cost of the related equipment) and is recorded as lease receivables when the lease is signed and the leased property is delivered to the client. The excess of the minimum lease payments and residual values over the cost of the equipment is recorded as unearned lease income. Unearned lease income is recognized over the term of the lease on a basis which results in an approximate level rate of return on the unrecovered lease investment. Lease payments are recorded when due under the lease contract. Residual values are established at lease inception equal to the estimated value to be received from the equipment following termination of the initial lease and such estimated value considers all relevant information and circumstances regarding the equipment. In estimating the equipment’s fair value at lease termination, the Corporation relies on internally or externally prepared appraisals, published sources of used equipment prices and historical experience adjusted for known current industry and economic trends. The Corporation’s estimates are periodically reviewed to ensure reasonableness; however, the amounts the Corporation will ultimately realize could differ from the estimated amounts. When there are other than temporary declines in the Corporation’s carrying amount of the unguaranteed residual value, the carrying value is reduced and charged to non-interest expense.

Operating Leases. Machinery and equipment are leased to clients under operating leases and are recorded at cost. Equipment under such leases is depreciated over the estimated useful life or term of the lease, if shorter. The impairment loss, if any, would be charged to expense in the period it becomes evident. Rental income is recorded on the straight-line accrual basis as other non-interest income.

Leasehold Improvements and Equipment. The cost of capitalized leasehold improvements is amortized on the straight-line method over the lesser of the term of the respective lease or estimated economic life. Equipment is stated at cost less accumulated depreciation and amortization which is calculated by the straight-line method over the estimated useful lives of three to ten years. Maintenance and repair costs are charged to expense as incurred. Improvements which extend the useful life are capitalized and depreciated over the remaining useful life of the assets.

Foreclosed Properties. Property acquired by repossession, foreclosure or by deed in lieu of foreclosure is carried at the lower of the recorded investment in the loan at the time of acquisition or the fair value of the underlying property, less costs to sell. Any write-down in the carrying value of a loan or lease at the time of acquisition is charged to the allowance for loan and lease losses. Any subsequent write-downs to reflect current fair value, as well as gains and losses on disposition and revenues are recorded in non-interest expense. Costs relating to the development and improvement of the property are capitalized while holding period costs are charged to other non-interest expense.

Bank-Owned Life Insurance. Bank-owned life insurance (“BOLI”) is reported at the amount that would be realized if the life insurance policies were surrendered on the balance sheet date. BOLI policies owned by the Banks are purchased with the objective to fund certain future employee benefit costs with the death benefit proceeds. The cash surrender value of such policies is recorded in cash surrender value of life insurance on the consolidated balance sheets and changes in the value are recorded in non-interest income. The total death benefit of all of the BOLI policies was $67.1 million as of December 31, 2015. There are no restrictions on the use of BOLI proceeds nor are there any contractual restrictions on the ability to surrender the policy. As of each of December 31, 2015 and 2014, there were no borrowings against the cash surrender value of the BOLI policies.

Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) Stock. The Banks are required to maintain FHLB stock as members of the FHLB, and in amounts as required by these institutions. Alterra, as a state chartered member of the Federal Reserve Bank of Kansas City, is required to own shares of FRB stock. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other marketable equity securities and their fair value is equal to cost. At December 31, 2015, and 2014, the Banks had FHLB stock of $1.8 million. Alterra had FRB stock of $1.1 million and $533,000 at December 31, 2015 and 2014, respectively. The Corporation periodically evaluates its holding in FHLB and FRB stock for impairment. Should the stock be impaired, it would be written down to its estimated fair value. There were no impairments recorded on FHLB and FRB stock during the years ended December 31, 2015 and 2014.

Goodwill and Other Intangible Assets. The excess of the cost of the acquisition over the fair value of the net assets acquired consists primarily of goodwill, core deposit intangibles and loan servicing rights. Core deposit intangibles have estimated finite lives and are amortized on an accelerated basis to expense over a period of seven years. Loan servicing rights, when purchased, are initially recorded at fair value and subsequently amortized in proportion to and over the period of estimated net servicing income. The Corporation reviews other intangible assets for impairment at least annually, or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, in which case an impairment charge would be recorded.

Goodwill is not amortized but is subject to impairment tests on at least an annual basis, and more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying amount (including goodwill). An initial qualitative evaluation is made to assess the likelihood of impairment and determine whether further quantitative testing to calculate the fair value is necessary. When the qualitative evaluation indicates that impairment is more likely than not, quantitative testing is required whereby the fair value of each reporting unit is calculated and compared to the recorded book value, “step one.” If the calculated fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and “step two” is not considered necessary. If the carrying value of a reporting unit exceeds its calculated fair value, the impairment test continues (“step two”) by comparing the carrying value of the reporting unit’s goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying value of goodwill exceeds the implied fair value of goodwill. See Note 6 for additional information on goodwill and other intangible assets.

Other Investments. The Corporation owns certain equity investments in other corporate organizations which are not consolidated because the Corporation does not own more than a 50% interest or exercise control over the organization. Such investments are not variable interest entities. Investments in corporations representing at least a 20% interest are generally accounted for using the equity method and investments in corporations representing less than 20% interest are generally accounted for at cost. Investments in limited partnerships representing from at least a 3% up to a 50% interest in the entity are generally accounted for using the equity method and investments in limited partnerships representing less than 3% are generally accounted for at cost. All of these investments are periodically evaluated for impairment. Should an investment be impaired, it would be written down to its estimated fair value. The equity investments are reported in other assets and the income and expense from such investments, if any, is reported in non-interest income and non-interest expense.

Derivative Instruments. The Corporation uses derivative instruments to protect against the risk of adverse price or interest rate movements on the value of certain assets, liabilities, future cash flows and economic hedges for written client derivative contracts. Derivative instruments represent contracts between parties that usually require little or no initial net investment and result in one party delivering cash to the other party based on a notional amount and an underlying as specified in the contract and may be subject to master netting agreements. A notional amount represents the number of units of a specific item, such as currency units. An underlying represents a variable, such as an interest rate. The amount of cash delivered from one party to the other is determined based on the interaction of the notional amount of the contract with the underlying.

Market risk is the risk of loss arising from an adverse change in interest rates, exchange rates or equity prices. The Corporation’s primary market risk is interest rate risk. Instruments designed to manage interest rate risk include interest rate swaps, interest rate options and interest rate caps and floors with indices that relate to the pricing of specific assets and liabilities. The nature and volume of the derivative instruments used to manage interest rate risk depend on the level and type of assets and liabilities on the balance sheet and the risk management strategies for the current and anticipated rate environments. Counterparty risk with respect to derivative instruments occurs when a counterparty to a derivative contract with an unrealized gain fails to perform according to the terms of the agreement. Counterparty risk is managed by limiting the counterparties to highly rated dealers, requiring collateral postings when values are in deficit positions, applying uniform credit standards to all activities with credit risk and monitoring the size and the maturity structure of the derivative portfolio.

All derivative instruments are to be carried at fair value on the consolidated balance sheets. The accounting for the gain or loss due to changes in the fair value of a derivative instrument depends on whether the derivative instrument qualifies as a hedge. If the derivative instrument does not qualify as a hedge, the gains or losses are reported in earnings when they occur. However, if the derivative instrument qualifies as a hedge, the accounting varies based on the type of risk being hedged. In 2015 and 2014, the Corporation solely utilized interest rate swaps which did not qualify for hedge accounting and therefore all changes in fair value and gains and losses on these instruments were reported in earnings as they occurred. The effects of netting arrangements are disclosed within the Notes of the Consolidated Financial Statements.

Income Taxes. Deferred income tax assets and liabilities are computed annually for temporary differences in timing between the financial statement and tax basis of assets and liabilities that result in taxable or deductible amounts in the future based on enacted tax law and rates applicable to periods in which the differences are expected to affect taxable income. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversals of deferred tax liabilities, appropriate tax planning strategies and projections for future taxable income over the period which the deferred tax assets are deductible. When necessary, valuation allowances are established to reduce deferred tax assets to the realizable amount. Management believes it is more likely than not that the Corporation will realize the benefits of these deductible differences, net of the existing valuation allowances.

Income tax expense or benefit represents the tax payable or tax refundable for a period, adjusted by the applicable change in deferred tax assets and liabilities for that period. The Corporation and its subsidiaries file a consolidated federal income tax return and separate state income tax returns. Tax sharing agreements allocate taxes to each entity for the settlement of intercompany taxes. The Corporation applies a more likely than not standard to each of its tax positions when determining the amount of tax expense or benefit to record in its financial statements. Unrecognized tax benefits are recorded in other liabilities. The Corporation recognizes accrued interest relating to unrecognized tax benefits in income tax expense and penalties in other non-interest expense.

Other Comprehensive Income or Loss. Comprehensive income or loss, shown as a separate financial statement, includes net income or loss, changes in unrealized holding gains and losses on available for sale securities, changes in deferred gains and losses on investment securities transferred from available for sale to held to maturity, if any, changes in unrealized gains and losses associated with cash flow hedging instruments, if any, and the amortization of deferred gains and losses associated with terminated cash flow hedges, if any. For the year ended December 31, 2015, there were no items requiring reclassification out of accumulated other comprehensive income.

Earnings Per Share. Earnings per common share (“EPS”) is computed using the two-class method. Basic EPS is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding for the period, excluding any participating securities. Participating securities include unvested restricted shares. Unvested restricted shares are considered participating securities because holders of these securities receive non-forfeitable dividends at the same rate as the holders of the Corporation’s common stock. Diluted EPS is computed by dividing net income allocated to common shares adjusted for reallocation of undistributed earnings of unvested restricted shares by the weighted average number of common shares determined for the basic EPS plus the dilutive effect of common stock equivalents using the treasury stock method based on the average market price for the period. Some stock options are anti-dilutive and therefore are not included in the calculation of diluted EPS.

Segments and Related Information. The Corporation is required to report each operating segment based on materiality thresholds of ten percent or more of certain amounts, such as revenue. Additionally, the Corporation is required to report separate operating segments until the revenue attributable to such segments is at least 75 percent of total consolidated revenue. The Corporation provides a broad range of financial services to individuals and companies in the Midwest. These services include demand, time, and savings products, the sale of certain non-deposit financial products and commercial and retail lending, leasing and trust services. While the Corporation’s chief decision-maker monitors the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a corporate-wide basis. The Corporation’s business units have similar basic characteristics in the nature of the products, production processes and type or class of client for products or services; therefore, these business units are considered one operating segment.

Stock Options. Prior to January 1, 2006, the Corporation accounted for stock-based compensation using the intrinsic value method. Under the intrinsic value method, compensation expense for employee stock options was generally not recognized if the exercise price of the option equaled or exceeded the fair market value of the stock on the date of grant.

On January 1, 2006, the Corporation adopted ASC Topic 718 using the prospective method as stock options were only granted by the Corporation prior to meeting the definition of a public entity. Under the prospective method, ASC Topic 718 must only be applied to the extent that those awards are subsequently modified, repurchased or canceled. No stock options have been granted since the Corporation met the definition of a public entity and no stock options have been modified, repurchased or cancelled subsequent to the adoption of ASC Topic 718. Therefore, no stock-based compensation was recognized in the consolidated statements of income for the years ended December 31, 2015 or 2014, except with respect to restricted stock awards. Upon vesting of any options subject to ASC Topic 718, the benefits of tax deductions in excess of recognized compensation expense will be reported as a financing cash flow, rather than as an operating cash flow.

Recent Accounting Pronouncements

In February 2015, the FASB issued ASU 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis.” This ASU changes the way reporting enterprises evaluate whether (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity (“VIE”), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. It also eliminates the VIE consolidation model based on majority exposure to variability that applied to certain investment companies and similar entities. The new guidance excludes money market funds that are required to comply with Rule 2a-7 of the Investment Company Act of 1940 and similar entities from the U.S. GAAP consolidation requirements. The new consolidation guidance is effective for public business entities for annual and interim periods in fiscal years beginning after December 15, 2015. At the effective date, all previous consolidation analysis that the guidance affects must be reconsidered. This includes the consolidation analysis for all VIEs and for all limited partnerships and similar entities that previously were consolidated by the general partner even though the entities were not VIEs. Early adoption is permitted, including early adoption in an interim period. If a reporting enterprise chooses to early adopt in an interim period, adjustments resulting from the revised consolidation analysis must be reflected as of the beginning of the fiscal year that includes that interim period. The Corporation intends to adopt the standard during the first quarter of 2016, as required, and with no expected material impact on its consolidated results of operations, financial position, or liquidity.

In August 2015, the FASB issued ASU No. 2015-15, “Interest-Imputation of Interest (Subtopic 835-30), with an effective date for annual reporting periods beginning after December 15, 2016. In April 2015, the FASB issued ASU 2015-03, “Interest - Imputation of Interest (Subtopic 835-30) that intends to simplify the presentation of debt issuance costs. This ASU is also effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. ASU 2015-15 further addresses the presentation of debt issuance costs related to line-of-credit-arrangements and allows for an entity to present the debt issuance costs as an asset and amortize ratably over the term of the line-of-credit arrangement. The Corporation intends to adopt the standard during the first quarter of 2016, as required, and with no expected material impact on the its consolidated results of operations, financial position, or liquidity.

In August 2015, the FASB issued ASU No. 2015-14, “Revenue from Contracts with Customers (Topic 606).” In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” with an original effective date for annual reporting periods beginning after December 15, 2016. The ASU is a converged standard between the FASB and the IASB that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The primary objective of the ASU is revenue recognition that represents the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2015-14 deferred the effective date of ASU 2014-09 to annual and interim reporting periods in fiscal years beginning after December 15, 2017. Earlier application is permitted only as of annual and interim reporting periods in fiscal years beginning after December 15, 2016. The Corporation is in the process of evaluating the impact of this standard but does not expect this standard to have a material impact on the Corporation’s consolidated results of operations, financial position, or liquidity.

In September 2015, the FASB issued ASU No. 2015-16, “Business Combinations (Topic 805).” The ASU intends to simplify the accounting for measurement adjustments to prior business combinations. The amendment requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The acquirer must record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. The amendment also requires an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. This amendment is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments should be applied prospectively to adjustments to provisional amounts that occur after the effective date of this amendment with earlier application permitted for financial statements that have not been issued. The Corporation intends to adopt the standard during the first quarter of 2016, as required, and with no expected material impact on its consolidated results of operations, financial position, or liquidity.

In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments (Subtopic 825-10).” The ASU amends certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This amendment supersedes the guidance to classify equity securities with readily determinable fair values into different categories, requires equity securities to be measured at fair value with changes in the fair value recognized through net income, and simplifies the impairment assessment of equity investments without readily determinable fair values. The amendment requires public business entities that are required to disclose the fair value of financial instruments measured at amortized cost on the balance sheet to measure that fair value using the exit price notion. The amendment requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option. The amendment requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes to the financial statements. The amendment reduces diversity in current practice by clarifying that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. This amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Entities should apply the amendment by means of a cumulative-effect adjustment as of the beginning of the fiscal year of adoption, with the exception of the amendment related to equity securities without readily determinable fair values, which should be applied prospectively to equity investments that exist as of the date of adoption. The Corporation intends to adopt the accounting standard during the first quarter of 2018, as required, and is currently evaluating the impact on its results of operations, financial position, and liquidity.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” The ASU intends to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities and disclosing key information about leasing arrangements. The ASU will require lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. The new lease guidance simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. The ASU is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. The Corporation is currently evaluating the impact on its results of operations, financial position, and liquidity.