XML 49 R33.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Significant Accounting Policies (Policies) | 12 Months Ended
--- | ---
Dec. 31, 2023
Accounting Policies [Abstract] |
Nature of Operations [Policy Text Block] | Nature of Operations ServisFirst Bancshares, Inc. (the “Company”) was formed on August 16, 2007 and is a bank holding company whose business is conducted by its wholly owned subsidiary ServisFirst Bank (the “Bank”). The Bank is headquartered in Birmingham, Alabama, and has provided a full range of banking services to individual and corporate customers throughout the Birmingham market since opening for business in May 2005. The Bank has since expanded into the Huntsville, Montgomery, Dothan and Mobile, Alabama; Pensacola, Sarasota, Tallahassee, and Tampa Bay, Florida; Atlanta, Georgia; Charleston, South Carolina; Charlotte and Asheville, North Carolina; Nashville, Tennessee; and Virginia Beach, Virginia markets. The Bank owns all of the stock of SF Intermediate Holding Company, Inc., which, in turn, owns all of the stock of SF TN Realty Holdings, Inc., which, in turn, owns all of the common stock of the Company’s real estate investment trusts, SF Realty 1, Inc., SF FLA Realty, Inc., SF GA Realty, Inc. and SF TN Realty, Inc. More details about SF Intermediate Holding Company, Inc. and its subsidiaries are included in Note 11.
Reclassification, Comparability Adjustment [Policy Text Block] | Reclassification Certain amounts reported in prior years have been reclassified to conform to the current year’s presentation. These reclassifications had no effect on the Company’s results of operations, financial position, or net cash flow.
Basis of Accounting, Policy and Use of Estimates [Policy Text Block] | Basis of Presentation and Accounting Estimates To prepare consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”), management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and future results could differ. The allowance for credit losses, valuation of deferred tax assets and the fair value of financial instruments are particularly subject to change. All numbers are in thousands except share and per share data.
Consolidation, Policy [Policy Text Block] | Basis of Consolidation The consolidated financial statements include the accounts of the Company and other entities in which it has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation.
Cash Due From Banks Interest Bearing Balances Due From Financial Institutions [Policy Text Block] | Cash, Due from Banks, Interest-Bearing Balances due from Financial Institutions Cash and due from banks include cash on hand, cash items in process of collection, amounts due from banks and interest bearing balances due from financial institutions. For purposes of cash flows, cash and cash equivalents include cash and due from banks and federal funds sold. Generally, federal funds are purchased and sold for one-day periods. Cash flows from loans, mortgage loans held for sale, federal funds sold, and deposits are reported net.
Investment, Policy [Policy Text Block] | Debt Securities Debt securities are classified based on the Company’s intention on the date of purchase. All debt securities classified as available-for-sale are recorded at fair value with any unrealized gains and losses reported in accumulated other comprehensive income (loss), net of the deferred income tax effects. Debt securities that the Company has the positive intent and ability to hold to maturity are classified as held-to-maturity and are carried at historical cost and adjusted for amortization of premiums and accretion of discounts. Transfers of debt securities into the held-to-maturity category from available-for-sale category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in other comprehensive income and in the carrying value of the held-to-maturity securities. Such amounts are amortized over the remaining life of the security. Interest and dividends on securities, including amortization of premiums and accretion of discounts calculated under the effective interest method, are included in interest income. For certain securities, amortization of premiums and accretion of discounts is computed based on the anticipated life of the security which may be shorter than the stated life of the security. Realized gains and losses from the sale of securities are determined using the specific identification method and are recorded on the trade date of the sale.
Equity Securities without Readily Determinable Fair Value [Policy Text Block] | Restricted Equity Securities Investments in restricted equity securities without a readily determinable market value are carried at cost.
Mortgage Banking Activity [Policy Text Block] | Mortgage Loans Held for Sale The Company classifies certain residential mortgage loans as held for sale. Typically, mortgage loans held for sale are sold to a third-party investor within a very short time period. The loans are sold without recourse and servicing is not retained. Net fees earned from this banking service are recorded in noninterest income. In the course of originating mortgage loans and selling those loans in the secondary market, the Company makes various representations and warranties to the purchaser of the mortgage loans. Each loan is underwritten using government agency guidelines. Any exceptions noted during this process are remedied prior to sale. These representations and warranties also apply to underwriting the real estate appraisal opinion of value for the collateral securing these loans. Under the representations and warranties, failure by the Company to comply with the underwriting and/or appraisal standards could result in the Company being required to repurchase the mortgage loan or to reimburse the investor for losses incurred (make whole requests) if such failure cannot be cured by the Company within the specified period following discovery. The Company continues to experience an insignificant level of investor repurchase demands. There were no expenses incurred as part of these buyback obligations for the years ended December 31, 2023 and 2022.
Policy Loans Receivable, Policy [Policy Text Block] | Loans Loans are reported at unpaid principal balances, less unearned fees and the allowance for credit losses. Interest on all loans is recognized as income based upon the applicable rate applied to the daily outstanding principal balance of the loans. Interest income on nonaccrual loans is recognized on a cash basis or cost recovery basis until the loan is returned to accrual status. A loan may be returned to accrual status if the Company is reasonably assured of repayment of principal and interest and the borrower has demonstrated sustained performance for a period of at least six months. Loan fees, net of direct costs, are reflected as an adjustment to the yield of the related loan over the term of the loan. The Company does not have a concentration of loans to any one industry. The accrual of interest on loans is discontinued when there is a significant deterioration in the financial condition of the borrower and full repayment of principal and interest is not expected or the principal or interest is more than 120 days past due, unless the loan is both well-collateralized and in the process of collection. Generally, all interest accrued but not collected for loans that are placed on nonaccrual status are reversed against current interest income. Interest collections on nonaccrual loans are generally applied as principal reductions. The Company determines past due or delinquency status of a loan based on contractual payment terms. Loan modifications are concessions granted to borrowers in the normal course of business, which would not otherwise be considered, where the borrowers are experiencing financial difficulty. The concessions granted most frequently involve reductions or delays in required payments of principal and interest for a specified time, the rescheduling of payments in accordance with a bankruptcy plan or the charge-off of a portion of the loan.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] | ACL – Debt Securities Held to Maturity Management uses a systematic methodology to determine its ACL for held-to-maturity debt securities. The ACL is a contra-asset valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected on the held-to-maturity portfolio. Management considers the effects of past events, current conditions, and reasonable and supportable forecasts on the collectability of the portfolio. The Company’s estimate of its ACL involves a high degree of judgment; therefore, Management’s process for determining expected credit losses may result in a range of expected credit losses. Management monitors the held-to-maturity portfolio to determine whether an ACL would need to be recorded. As of December 31, 2023 and 2022, the Company had $982.7 million and $1.03 billion, respectively, of held-to-maturity securities and no related ACL recorded for either year. Impairment of Debt Securities Available for Sale For available-for-sale debt securities in an unrealized loss position, the Company will first assess whether i) it intends to sell or ii) it is more likely than not that it will be required to sell the debt security before recovery of its amortized cost basis. If either case is applicable, any previously recognized allowances are charged off and the debt security’s amortized cost is written down to fair value through income. If neither case is applicable, the debt security is evaluated to determine whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, the Company considers the extent to which fair value is less than amortized cost, any changes to the rating of the debt security by a rating agency and any adverse conditions specifically related to the debt security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the debt security are compared to the amortized cost basis of the debt security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount by which the fair value is less than the amortized cost basis. Any impairment that has not been recorded through allowance for credit losses is recognized in other comprehensive income, net of tax. Adjustments to the allowance are reported in the income statement as a component of credit loss expense. Debt securities are charged off against the allowance or, in the absence of any allowance, written down through income when deemed uncollectible by the Company or when either of the aforementioned criteria regarding intent or requirement to sell is met specifically for available-for-sale debt securities. The Company excludes the accrued interest receivable balance from the amortized cost basis in measuring expected credit losses on debt securities and does not record an ACL on accrued interest receivable. ACL – Loans The ACL is based on the Company’s evaluation of the loan portfolios, past loan loss experience, current asset quality trends, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay (including the timing of future payment), the estimated value of any underlying collateral, composition of the loan portfolio, economic conditions, industry and peer bank loan quality indications and other pertinent factors, including regulatory recommendations. The process is inherently subjective and subject to significant change as it requires material estimates. The allowance is increased by a provision for credit losses, which is charged to expense, and reduced by charge-offs, net of recoveries. In addition, various regulatory agencies, as an integral part of their examination process, periodically review the allowance for credit losses. Such agencies may require the Company to recognize adjustments to the allowance based on their judgments about information available to them at the time of their examination. Loans with similar risk characteristics are evaluated in pools and, depending on the nature of each identified pool, the Company utilizes a discounted cash flow (“DCF”), probability of default / loss given default (“PD/LGD”) or remaining life method. The historical loss experience estimate by pool is then adjusted by forecast factors that are quantitatively related to the Company’s historical credit loss experience, such as national unemployment rates and gross domestic product. Losses are predicted over a period of time determined to be reasonable and supportable, and at the end of the reasonable and supportable period losses are reverted to long term historical averages. The reasonable and supportable period and reversion period are re-evaluated each quarter by the Company and are dependent on the current economic environment among other factors. The estimated credit losses for each loan pool are then adjusted for changes in qualitative factors not inherently considered in the quantitative analyses. The qualitative adjustments either increase or decrease the quantitative model estimation. The Company considers factors that are relevant within the qualitative framework which include the following: lending policy, changes in nature and volume of loans, staff experience, changes in volume and trends of problem loans, concentration risk, trends in underlying collateral values, external factors, quality of loan review system and other economic conditions. Credit losses for loans that no longer share similar risk characteristics with the collectively evaluated pools are excluded from the collective evaluation and estimated on an individual basis. Individual evaluations are performed for nonaccrual loans, loans rated substandard, and modified loans classified as troubled debt restructurings. Specific allowances were estimated based on one of several methods, including the estimated fair value of the underlying collateral, observable market value of similar debt or the present value of expected cash flows. The Company measures expected credit losses over the contractual term of a loan, adjusted for estimated prepayments. The contractual term excludes expected extensions, renewals and modifications. Credit losses are estimated on the amortized cost basis of loans, which includes the principal balance outstanding, purchase discounts and premiums and deferred loan fees and costs. Accrued interest receivable on loans is excluded from the estimate of credit losses. ACL – Unfunded Loan Commitments The ACL is a liability account representing expected credit losses over the contractual period for which the Company is exposed to credit risk resulting from a contractual obligation to extend credit. No allowance is recognized if the Company has the unconditional right to cancel the obligation. The ACL is reported as a component of other liabilities within the Consolidated Balance Sheets. Adjustments to the ACL for unfunded commitments are reported in the Consolidated Income Statements as a component of other operating expense.
Financing Receivable, Real Estate Acquired Through Foreclosure [Policy Text Block] | Foreclosed Real Estate Foreclosed real estate includes both formally foreclosed property and in-substance foreclosed property. At the time of foreclosure, foreclosed real estate is recorded at fair value less cost to sell, which becomes the property’s new basis. Any write downs based on the asset’s fair value at date of acquisition are charged to the allowance for credit losses. After foreclosure, these assets are carried at the lower of their new cost basis or fair value less cost to sell. Costs incurred in maintaining foreclosed real estate and subsequent adjustments to the carrying amount of the property are included in other operating expenses.
Property, Plant and Equipment, Policy [Policy Text Block] | Premises and Equipment Land is carried at cost. Premises and equipment are carried at cost less accumulated depreciation. Expenditures for additions and major improvements that significantly extend the useful lives of the assets are capitalized. Expenditures for repairs and maintenance are charged to expense as incurred. Assets which are disposed of are removed from the accounts and the resulting gains or losses are recorded in operations. Depreciation is calculated on a straight-line basis over the estimated useful lives of the related assets (3 to 39.5 years). Leasehold improvements are amortized on a straight-line basis over the lesser of the lease terms or the estimated useful lives of the improvements.
Lessee, Leases [Policy Text Block] | Leases The Company leases certain office space and equipment under operating leases. Leases are recognized as a liability to make lease payments and as an asset representing the right to use the asset during the lease term, or “lease liability” and “right-of-use asset,” respectively. The lease liability is measured as the present value of remaining lease payments, discounted at the Company’s incremental borrowing rate. The Company reports its right-of-use assets in other assets and its lease liabilities in other liabilities within the Consolidated Balance Sheets. Certain of the leases include one or more renewal options that extend the initial lease term 1 to 5 years. The exercise of lease renewal options is typically at the Company’s sole discretion; therefore, a majority of renewals to extend lease terms are not included in the right-of-use assets and lease liabilities as they are not reasonably certain to be exercised. Renewal options are regularly evaluated and when they are reasonably certain to be exercised, are included in lease terms. None of the Company’s leases provide an implicit discount rate. The Company uses its incremental collateralized borrowing rate based on the information available at the lease commencement date in determining the present value of the lease payments. The Company does not recognize short-term leases on its Consolidated Balance Sheets. A short-term operating lease has an original term of 12 months or less and does not have a purchase option that is likely to be exercised.
Bank Owned Life Insurance, Policy [Policy Text Block] | Bank Owned Life Insurance (“BOLI”) BOLI is comprised of long-term life insurance contracts on the lives of certain current and past employees where the insurance policy benefit and ownership are retained by the employer. Its cash surrender value is an asset that the Company uses to partially offset the future cost of employee benefits. The cash surrender value accumulation on BOLI is permanently tax deferred if the policy is held to the insured person’s death and certain other conditions are met.
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] | Goodwill The Company has recorded $13.6 million of goodwill at December 31, 2023 in connection with the acquisition of Metro Bancshares, Inc. in 2015. The Company tests its goodwill for impairment annually unless interim events or circumstances make it more likely than not that an impairment loss has occurred. Impairment is defined as the amount by which the carrying value of a reporting unit exceeds its fair value. Impairment losses, if incurred, would be charged to operating expense. For the purposes of evaluating goodwill, the Company has determined that it operates only one reporting unit.
Derivatives, Policy [Policy Text Block] | Derivatives and Hedging Activities As part of its overall interest rate risk management, the Company uses derivative instruments, which can include interest rate swaps, caps, and floors. GAAP requires all derivative instruments to be carried at fair value on the Consolidated Balance Sheets. This accounting standard provides special accounting provisions for derivative instruments that qualify for hedge accounting. To be eligible, the Company must specifically identify a derivative as a hedging instrument and identify the risk being hedged. The derivative instrument must be shown to meet specific requirements under this accounting standard. The Company designates the derivative on the date the derivative contract is entered into as a hedge of (1) the fair value of a recognized asset or liability or of an unrecognized firm commitment (a “fair-value” hedge) or (2) the variability of cash flows to be received generally in a forecasted transaction related to a recognized asset or liability (a “cash-flow” hedge). Changes in the fair value of a derivative that is highly effective as a fair-value hedge, and that is designated and qualifies as a fair-value hedge, along with the loss or gain on the hedged asset or liability that is attributable to the hedged risk (including losses or gains on firm commitments), are recorded in current-period earnings. The changes in a derivative’s fair value that are included in the assessment of hedge effectiveness for a derivative that is highly effective and that is designated and qualifies as a cash-flow hedge are recorded in other comprehensive income until earnings are affected by the variability of cash flows (e.g., when periodic settlements on a variable-rate asset or liability are recorded in earnings). The Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. This process includes linking all derivatives that are designated as fair-value or cash-flow hedges to specific assets and liabilities on the Consolidated Balance Sheets or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, as necessary, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in fair values or cash flows of hedged items. When it is determined that a derivative is not highly effective as a hedge or that it has ceased to be a highly effective hedge, the Company discontinues hedge accounting prospectively. The Company discontinues hedge accounting prospectively when: (1) it is determined that the derivative is no longer effective in offsetting changes in the fair value or cash flows of a hedged item (including firm commitments or forecasted transactions); (2) the derivative expires or is sold, terminated, or exercised; (3) the derivative is re-designated as a hedge instrument, because it is unlikely that a forecasted transaction will occur; (4) a hedged firm commitment no longer meets the definition of a firm commitment; or (5) management determines that designation of the derivative as a hedge instrument is no longer appropriate. When hedge accounting is discontinued because it is determined that the derivative no longer qualifies as an effective fair-value hedge, hedge accounting is discontinued prospectively and the derivative will continue to be carried on the balance sheet at its fair value with all changes in fair value being recorded in earnings but with no offsetting fair value adjustment being recorded on the hedged item. For a discontinued cash flow hedge the change in fair value is no longer recorded in other comprehensive income. The Company uses derivatives to hedge interest rate exposures associated with mortgage loan originations. Interest rate lock commitments related to loans that are originated for later sale are classified as derivatives. In the normal course of business, the Company regularly extends these rate lock commitments to customers during the loan origination process. The fair values of the Company’s rate lock commitments to customers as of December 31, 2023 and 2022 were not material and have not been recorded.
Revenue from Contract with Customer [Policy Text Block] | Revenue Recognition The Company records revenue from contracts with customers in accordance with ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). The guidance requires recognition of revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. While the majority of the Company’s revenue-generating transactions are excluded from the scope of ASC 606, including revenue generated from financial instruments, such as securities and loans, the relevant revenue-generating transactions are classified within non-interest income and are described as follows:
| • | Deposit account service charges – represent service fees for monthly activity and maintenance on customer accounts. Attributes can be transaction-based, item-based or time-based. Revenue is recognized when our performance obligation is completed, which is generally monthly for maintenance services or when a transaction is processed. Payment for such performance obligations are generally received at the time the performance obligations are satisfied.
| • | Credit card rewards program membership fees – represent memberships in our credit card rewards program and are paid annually by our cardholders at the time they open an account and on each anniversary. Revenue is recognized ratably over the membership period.
Other non-interest income primarily includes income on BOLI contracts, letter of credit fees and gains on sale of loans held for sale.
Income Tax, Policy [Policy Text Block] | Income Taxes Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. The Company follows the provisions of ASC 740-10, Income Taxes. ASC 740-10 establishes a single model to address accounting for uncertain tax positions and prescribes a minimum recognition threshold a tax position is required to meet before being recognized in the financial statements. There is a two-step process in the evaluation of a tax position. The first step is recognition. A Company determines whether it is more likely than not that a tax position will be sustained upon examination, including a resolution of any related appeals or litigation processes, based upon the technical merits of the position. The second step is measurement. A tax position that meets the more likely than not recognition threshold is measured at the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement.
Share-Based Payment Arrangement [Policy Text Block] | Stock-Based Compensation At December 31, 2023, the Company had a stock-based compensation plan for grants of equity compensation to key employees and directors. The plan has been accounted for under the provisions of ASC 718-10, Compensation – Stock Compensation with respect to employee stock options, restricted stock and performance-based stock units (“PSUs”). Specifically, awards are accounted for using the fair value-based method of accounting. Stock compensation costs are recognized prospectively for all new awards granted under the stock-based compensation plans. Compensation expense related to stock options is calculated using a method that is based on the underlying assumptions of the Black-Scholes-Merton option pricing model and is charged to expense over the requisite service period (e.g. vesting period). Compensation expense related to restricted stock awards is based upon the fair value of the awards on the date of grant and is charged to earnings over the requisite service period of the award. PSUs represent the opportunity to earn shares of the Company’s common stock after a prescribed period and based on the relative market performance of the Company’s stock, subject to the recipient’s continued employment through the end of the performance period. The actual shares earned under the PSUs generally range between zero and 150% of the target level award, depending on the total stockholder return (TSR) of the Company over the performance period ranked relative to the TSR of a defined peer group of companies. A Monte Carlo simulation is used to estimate the fair value of the PSUs as of the valuation date. Compensation expense for PSUs is recognized regardless of the extent to which the market condition is satisfied.
Earnings Per Share, Policy [Policy Text Block] | Earnings per Common Share Basic earnings per common share are computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per common share include the dilutive effect of additional potential common shares issuable under stock options and performance shares.
Loan Commitments, Policy [Policy Text Block] | Loan Commitments and Related Financial Instruments Financial instruments, which include credit card arrangements, commitments to make loans and standby letters of credit, are issued to meet customer financing needs. The face amount for these items represents the exposure to loss before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Instruments such as stand-by letters of credit are considered, and accounted for as, financial guarantees. The fair value of these financial guarantees is not material.
Fair Value of Financial Instruments, Policy [Policy Text Block] | Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 21. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates.
Comprehensive Income, Policy [Policy Text Block] | Comprehensive Income Comprehensive income consists of net income and other comprehensive income. Accumulated comprehensive (loss) income, which is recognized as a separate component of equity, includes unrealized gains and losses on available-for-sale debt securities and amortization of unrealized gains and losses on debt securities transferred from available-for-sale to held-to-maturity at the time of transfer. Amounts reported as accumulated comprehensive income are shown net of taxes.
Advertising Cost [Policy Text Block] | Advertising Advertising costs are expensed as incurred. Advertising expense for the years ended December 31, 2023, 2022 and 2021 was $768,000, $447,000 and $499,000, respectively. Advertising typically consists of local print media aimed at businesses that the Company targets as well as sponsorships of local events in which the Company’s clients and prospects are involved.
New Accounting Pronouncements, Policy [Policy Text Block] | Recent Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The update provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. The guidance provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. The guidance is intended to help stakeholders during the global market-wide reference rate transition period. Therefore, it will be effective for a limited time, starting March 12, 2020 through December 31, 2024 as recently amended by the FASB. The Company has identified a replacement reference rate established by the American Financial Exchange. This rate is based on an active market of daily fund trading among participant banks. The Company is applying the guidance provided by this ASU in transitioning to the new reference rate. In August 2021, the FASB issued ASU 2021-06, Presentation of Financial Statements (Topic 205), Financial Services—Depository and Lending (Topic 942), and Financial Services—Investment Companies (Topic 946): Amendments to SEC Paragraphs Pursuant to SEC Final Rule Releases No. 33-10786, Amendments to Financial Disclosures about Acquired and Disposed Businesses, and No. 33-10835, Update of Statistical Disclosures for Bank and Savings and Loan Registrants. This ASU amends and adds various SEC paragraphs to the codification pursuant to the issuance of SEC Final Rule Releases No. 33-10786 and No. 33-10835 issued to improve disclosure rules. The ASU was effective upon issuance. The adoption of this disclosure guidance did not have a material impact on the Company's consolidated financial statements. In July 2021, the FASB issued ASU 2021-05, Leases (Topic 842): Lessors-Certain Leases with Variable Lease Payments, which amends guidance so that lessors are no longer required to record a selling loss at lease commencement for a lease with any variable lease payments that do not depend on an index or rate. A lessor would classify such leases as an operating lease rather than a sales-type or direct financing lease. The adoption of ASU 2021-05 as of January 1, 2022 did not have a material impact on the Company’s consolidated financial statements. In March 2022, the FASB issued ASU 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosure. For public business entities, the amendments require disclosure of current-period gross write-offs by year of origination for financing receivables and net investment in leases within the scope of Subtopic 326-20. Gross write-off information must be included in the vintage disclosures required for public business entities in accordance with paragraph 326-20-50-6, which requires that an entity disclose the amortized cost basis of financing receivables by credit quality indicator and class of financing receivable by year of origination. The Company adopted ASU 2022-02 effective January 1, 2023 on a prospective basis. Adoption of ASU 2022-02 did not have a material impact on the Company’s consolidated financial statements other than providing the new required disclosures. In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. The update clarifies that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and, therefore, is not considered in measuring fair value. This update is effective for public business entities for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2023. Early adoption is permitted. The Company is assessing the impact of adopting the update on its financial statements and disclosures. In March 2023, the Financial Accounting Standards Board issued ASU 2023-02, Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. These amendments allow entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU responds to stakeholder feedback that the proportional amortization method provides investors and other allocators of capital with a better understanding of the returns from investments that are made primarily for the purpose of receiving income tax credits and other income tax benefits. ASU 2023-02 is effective for public entities for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for all entities in any interim period. The Company is assessing its tax credit investments for whether they qualify for proportional amortization treatment and plans to adopt the amendments soon after. The Company does not currently believe the amendments will have a material impact on its consolidated financial statements. In November 2023, the FASB issued ASU 2023-07, Segment Reporting—Improvements to Reportable Segment Disclosures. This amendment is intended to improve disclosures about a public entity’s reportable segments and addresses requests from investors and other decision makers for additional, more detailed information about a reportable segment’s expenses. The amendment applies to all public entities that are required to report segment information in accordance with Topic 280. All public entities will be required to report segment information in accordance with the new guidance starting in annual periods beginning after December 15, 2023, and interim periods within fiscal years beginning after December 31, 2024. Early adoption is permitted. The amendments are to be applied retrospectively to all periods presented and segment expense categories should be based on the categories identified at adoption. The Company does not currently expect adoption of the amendment to have a material impact on its consolidated financial statements. In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ASU 2023-09 requires enhanced income tax disclosures primarily related to the rate reconciliation and income taxes paid information to provide more transparency by requiring (i) consistent categories and greater disaggregation of information in the rate reconciliation table and (ii) income taxes paid, net of refunds, to be disaggregated by jurisdiction based on an established threshold. The amendments in this standard will be effective for the Company on January 1, 2025. The Company is currently evaluating the impact the amendments will have the consolidated financial statements and related disclosures.

X
- Definition Disclosure of accounting policy related to Bank Owned Life Insurance. + References No definition available. + Details
Name: | sfbs_BankOwnedLifeInsurancePolicyPolicyTextBlock
Namespace Prefix: | sfbs_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS) and the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. + References No definition available. + Details
Name: | sfbs_BasisOfAccountingPolicyAndUseOfEstimatesPolicyTextBlock
Namespace Prefix: | sfbs_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The policy disclosure for cash due from banks and interest bearing balances due from financial institutions. + References No definition available. + Details
Name: | sfbs_CashDueFromBanksInterestBearingBalancesDueFromFinancialInstitutionsPolicyTextBlock
Namespace Prefix: | sfbs_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The policy disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward. + References No definition available. + Details
Name: | sfbs_NatureOfOperationsPolicyTextBlock
Namespace Prefix: | sfbs_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for advertising cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -SubTopic 35 -Topic 720 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483406/720-35-50-1 + Details
Name: | us-gaap_AdvertisingCostsPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for comprehensive income. + References No definition available. + Details
Name: | us-gaap_ComprehensiveIncomePolicyPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483426/235-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481203/810-10-50-1 + Details
Name: | us-gaap_ConsolidationPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for its derivative instruments and hedging activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(n)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-7 + Details
Name: | us-gaap_DerivativesPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-2 + Details
Name: | us-gaap_EarningsPerSharePolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for investment in equity security without readily determinable fair value, which does not qualify for practical expedient to estimate fair value using net asset value per share. Includes, but is not limited to, information considered for determining upward and downward adjustment from observable price change. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479536/321-10-50-3 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValuePolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for determining the fair value of financial instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 60 -Paragraph 1 -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482053/820-10-60-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 825 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-1 + Details
Name: | us-gaap_FairValueOfFinancialInstrumentsPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for intangible assets. This accounting policy may address both intangible assets subject to amortization and those that are not. The following also may be disclosed: (1) a description of intangible assets (2) the estimated useful lives of those assets (3) the amortization method used (4) how the entity assesses and measures impairment of such assets (5) how future cash flows are estimated (6) how the fair values of such asset are determined. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(h)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 17 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-17 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-25 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-28 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 19 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-19 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482765/220-10-50-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-20 + Details
Name: | us-gaap_IncomeTaxPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for investment in financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(f)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(f)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(f)(3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 12 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 19 -Subparagraph (2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-19 + Details
Name: | us-gaap_InvestmentPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for leasing arrangement entered into by lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-1 + Details
Name: | us-gaap_LesseeLeasesPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for loan commitments accounted for as derivatives, including the methods and assumptions used to estimate fair value and any associated hedging strategies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.DD) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479601/815-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479601/815-10-S99-1 + Details
Name: | us-gaap_LoanCommitmentsPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for estimating the allowance for losses on loans and lease receivables. The disclosure may include (a) how the entity determines each element of the allowance, (b) which loans are evaluated individually and which loans are evaluated as a group, (c) how the entity determines both the allocated and unallocated portions of the allowance, (d) how the entity determines the loss factors applied to graded loans in order to develop a general allowance, and (e) what self-correcting mechanism the entity uses to reduce differences between estimated and actual losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-9 + Details
Name: | us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for the lending, securitization, sales, transfers and servicing practices for mortgage banking activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481820/948-310-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableMortgageBankingActivitiesPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for real estate acquired through foreclosure. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//310-10/tableOfContent + Details
Name: | us-gaap_LoansAndLeasesReceivableRealEstateAcquiredThroughForeclosurePolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for policy loans receivable, including the basis for determining the amount reported for loans made to policyholders against and secured by future policy benefits. May also disclose the range of interest rates charged to policyholders on such loans. + References No definition available. + Details
Name: | us-gaap_PolicyLoansReceivablePolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for reclassification affecting comparability of financial statement. Excludes amendment to accounting standards, other change in accounting principle, and correction of error. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 205 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483504/205-10-50-1 + Details
Name: | us-gaap_PriorPeriodReclassificationAdjustmentDescription
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 + Details
Name: | us-gaap_PropertyPlantAndEquipmentPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for revenue from contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 19 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-19 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-18 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-20 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-20 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-20 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-20 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (e) -SubTopic 10 -Topic 235 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483426/235-10-50-4 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org//606/tableOfContent + Details
Name: | us-gaap_RevenueFromContractWithCustomerPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for award under share-based payment arrangement. Includes, but is not limited to, methodology and assumption used in measuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(v) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.C.Q3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.1.Q5) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.3.Q2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2.Q6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//718/tableOfContent Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration