Organization and Basis of Presentation (Policies)	9 Months Ended
Organization and Basis of Presentation (Policies)	Sep. 30, 2019
Basis of Presentation	Basis of Presentation The following is a description of the significant accounting and reporting policies that the Company and its subsidiaries follow in preparing and presenting their consolidated financial statements, which conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The preparation of financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimates that are used in connection with the determination of the allowance for loan losses and the evaluation of goodwill for impairment. The accompanying consolidated financial statements include the accounts of the Company and other entities in which the Company has a controlling financial interest. All inter-company accounts and transactions are eliminated in consolidation. The Company currently has certain unconsolidated subsidiaries in the form of wholly-owned statutory business trusts, which were formed to issue guaranteed capital securities. See Note 7, Borrowed Funds, for additional information regarding these trusts.
Recently Adopted/Issued Accounting Standards	Recently Adopted Accounting Standards The Company adopted ASU No. 2018-16, Derivatives and Hedging (Topic 815)—Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes, effective on its issuance date of October 25, 2018. The purpose of ASU 2018-16 is to permit the use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815. The amendments in ASU 2018-16 are required to be applied prospectively for qualifying new or redesignated hedging relationships entered into on or after the date of adoption. The adoption of ASU No. 2018-16 did not have a material impact on the Company’s Consolidated Statements of Condition, results of operations, or cash flows. The Company adopted ASU No. 2018-15, Intangibles – Goodwill and Other – Internal Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract as of January 1, 2019. ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendment. The adoption of ASU 2018-15 did not have a material effect on the Company’s Consolidated Statements of Condition, results of operations, or cash flows. The Company adopted ASU No. 2017-08, Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities as of January 1, 2019. ASU No. 2017-08 specifies that the premium amortization period ends at the earliest call date, rather than the contractual maturity date, for purchased non-contingently callable debt securities. Shortening the amortization period is generally expected to more closely align the interest income recognition with the expectations incorporated in the market pricing of the underlying securities. The adoption of ASU No. 2017-08 on January 1, 2019 did not have a material effect on the Company’s Consolidated Statements of Condition, results of operations, or cash flows. The Company adopted ASU No. 2016-02, Leases (Topic 842), and its subsequent amendments to the ASU as of January 1, 2019, using the modified retrospective approach and utilizing the effective date as its date of initial application, for which prior periods are presented in accordance with the previous guidance in ASC 840, Leases. Topic 842 was intended to improve financial reporting about leasing transactions and the key provision impacting the Company was the requirement for a lessee to record a right-of-use asset and a liability, which represents the obligation to make lease payments for long-term operating leases. Additionally, ASU 2016-02 includes quantitative and qualitative disclosures required by lessees and lessors to help financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. Topic 842 includes a number of optional practical expedients that entities may elect to apply. The Company adopted the practical expedients of: not reevaluating whether or not a contract contains a lease; retaining current lease classification; not reassessing initial direct costs for existing leases; and not reassessing existing land easements that were not previously accounted for as leases under current lease accounting rules. Accordingly, previously reported financial statements, including footnote disclosures, have not been recast to reflect the application of ASU 2016-02 to all comparative periods presented. The adoption of ASU 2016-02, as reflected in Note 11, did not have a material impact on the Company’s Consolidated Statements of Condition, results of operations, or cash flows. Recently Issued Accounting Standards In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. The purpose of ASU 2018-13 is to improve the effectiveness of disclosures in the notes to financial statements by facilitating clear communication of the information required by GAAP that is most important to users of each entity’s financial statements. The amendments in ASU 2018-13 are effective for the Company as of January 1, 2020. The amendments remove the disclosure requirements for transfers between Levels 1 and 2 of the fair value hierarchy, the disclosure of the policy for timing of transfers between levels of the fair value hierarchy, and the disclosure of the valuation processes for Level 3 fair value measurements. Additionally, the amendments modify the disclosure requirements for investments in certain entities that calculate net asset value and measurement uncertainty. Finally, the amendments added disclosure requirements for the changes in unrealized gains and losses included in other comprehensive income for recurring Level 3 fair value measurements and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The adoption of ASU 2018-13 is not expected to have a material effect on the Company’s Consolidated Statements of Condition, results of operations, or cash flows. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. ASU No. 2017-04 eliminates the second step of the goodwill impairment test which requires an entity to determine the implied fair value of the reporting unit’s goodwill. Instead, an entity will recognize an impairment loss if the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, with the impairment loss not to exceed the amount of goodwill recorded. ASU No. 2017-04 does not amend the optional qualitative assessment of goodwill impairment. The Company plans to adopt ASU No. 2017-04 prospectively beginning January 1, 2020 and the impact of its adoption on the Company’s Consolidated Statements of Condition, results of operations, or cash flows will be dependent upon goodwill impairment determinations made after that date. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU No. 2016-13 amends guidance on reporting credit losses for assets held on an amortized cost basis and available-for-sale debt securities. For assets held at amortized cost, ASU No. 2016-13 eliminates the probable initial recognition threshold in current GAAP and, instead, requires an entity to reflect its current estimate of all expected credit losses. Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The amendments in ASU No. 2016-13 replace the incurred loss impairment methodology in current GAAP with a methodology that reflects the measurement of expected credit losses based on relevant information about past events, including historical loss experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amounts. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of financial assets to present the net amount expected to be collected. For available-for-sale debt securities, credit losses should be measured in a manner similar to current GAAP but will be presented as an allowance rather than as a write-down. The amendments affect loans, debt securities, trade receivables, off-balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash.