Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of useful lives for premises and equipment

The ranges of estimated useful lives for the principal classes of assets are as follows:

Premises and Equipment	Useful Lives
Buildings	25 years
Furniture, fixtures and equipment, building improvements	3 to 7 years
Leasehold improvements	Term of lease or useful life, whichever is shorter

Schedule of new accounting pronouncements adopted and recent accounting pronouncements

New Accounting Pronouncements Adopted in 2019

Standard	Required Date of Adoption	Description	Effects on Financial Statements
Standards Adopted in 2019
ASU 2016-02, Leases (Topic 842) and subsequent related ASUs	January 1, 2019 for leases standards other than ASU 2019-01 January 1, 2020 for ASU 2019-01 where early adoption is permitted.	ASC Topic 842, Leases, supersedes ASC Topic 840, Leases. This ASU requires lessees to recognize right-of-use assets and related lease liabilities for all leases with lease terms of more than 12 months on the Consolidated Balance Sheet, and provide quantitative and qualitative disclosures regarding key information about the leasing arrangements. For short-term leases with a term of 12 months or less, lessees can make a policy election not to recognize lease assets and lease liabilities. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance or operating lease. Lessee accounting for finance leases, as well as lessor accounting is largely unchanged. The standard may be adopted using a modified retrospective approach through a cumulative-effect adjustment. In addition, the FASB issued ASU 2018-11, Leases (Topic 842) Targeted Improvements, which provides companies the option to continue to apply the legacy guidance in ASC 840, Leases, including its disclosure requirements, in the comparative periods presented in the year they adopt ASU 2016-02. Companies that elect this transition option can recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption rather than in the earliest period presented.	The Company adopted all the new lease standards on January 1, 2019 using the alternative transition method, which allows the adoption of the accounting standard prospectively without revising comparable prior periods’ financial information. On January 1, 2019, the Company recognized $109.1 million and $117.7 million increase in right-of-use assets and associated lease liabilities, respectively, based on the present value of the expected remaining operating lease payments. In addition, the Company also recognized a cumulative-effect adjustment, net of tax of $10.5 million to increase beginning balance of retained earnings as of January 1, 2019 related to the deferred gains on our prior sale and leaseback transactions that occurred prior to the date of adoption. The adoption of the new leases standards did not have a material impact on the Company’s Consolidated Statement of Income. Disclosures related to leases are included in Note 10 — Leases to the Consolidated Financial Statements in this Form 10-K.
ASU 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	January 1, 2019 Early adoption (including adoption in an interim period) is permitted for entities that already adopted ASU 2017-12.	This ASU amends ASC Topic 815, Derivatives and Hedging, by adding the OIS rate based on SOFR to the list of U.S. benchmark interest rates that are eligible to be hedged to facilitate the London Interbank Offered Rate (“LIBOR”) to SOFR transition. The guidance should be applied prospectively for qualifying new or redesignated hedging relationships entered into on or after the date of adoption.	The Company adopted ASU 2018-16 prospectively on January 1, 2019. The adoption of this guidance did not impact existing hedges but may impact new hedge relationships that are benchmarked against the SOFR OIS rate.

Recent Accounting Pronouncements

Standard	Required Date of Adoption	Description	Effects on Financial Statements
Standards Adopted in 2020
ASU 2016-13,  Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments and subsequent related ASUs	January 1, 2020 Early adoption is permitted on January 1, 2019.	The ASU introduces a new current expected credit loss (“CECL”) impairment model that applies to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loan receivables, AFS and held-to-maturity debt securities, net investments in leases and off-balance sheet credit exposures. The CECL model utilizes a lifetime “expected credit loss” measurement objective for the recognition of credit losses at the time the financial asset is originated or acquired. The expected credit losses are adjusted in each period for changes in expected lifetime credit losses. This ASU also expands the disclosure requirements regarding an entity’s assumptions, models and methods for estimating the allowance for loan and lease losses, and requires disclosure of the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination (i.e., by vintage year). The guidance should be applied using a modified retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the reporting period of adoption. The new guidance also allows optional relief for certain instruments measured at amortized cost with an option to irrevocably elect the fair value option under ASC Topic 825, Financial Instruments.	The Company adopted ASU 2016-13 using a modified retrospective approach on January 1, 2020 without electing the fair value option on eligible financial instruments under ASU 2019-05. The Company has completed its implementation of the new processes and controls over the new credit and loss aggregation models, completed two parallel runs, analyzed model results, revised the qualitative framework and updated policies and disclosures. Upon adoption of the ASU, the Company‘s ACL, which includes the reserve for unfunded credit commitments, increased approximately 34% from $369.4 million as of December 31, 2019. This impact was recorded as a cumulative-effect adjustment that reduced retained earnings on January 1, 2020.  This increase in ACL was mainly driven by the Company’s C&I and CRE loan portfolios due to the capture of lifetime expected credit losses under the new guidance. There was no ACL recorded on the AFS securities portfolio upon the adoption of this guidance. The regulatory rules provide the banks with the option to elect a three-year phase-in of the “day one” impact of CECL. The Company has elected not to apply the three-year phased-in approach in its first quarter 2020’s regulatory capital calculations. Upon adoption of CECL, the Company and the Bank are well-capitalized.
ASU2017-04,  Intangibles — Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment	January 1, 2020 Early adoption is permitted for interim or annual goodwill impairment tests with measurement dates after January 1, 2017.	The ASU simplifies the accounting for goodwill impairment. Under this guidance, an entity will no longer perform a hypothetical purchase price allocation to measure goodwill impairment. Instead, an impairment loss will be recognized when the carrying amount of a reporting unit exceeds its fair value. The guidance also eliminates the requirement to perform a qualitative assessment for any reporting units with a zero or negative carrying amount. This guidance should be applied prospectively.	The Company adopted this guidance on January 1, 2020. The Company does not expect the adoption of this guidance to have a material impact on the Company’s Consolidated Financial Statements.
ASU 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	January 1, 2020 Early adoption is permitted.	The ASU amends ASC Topic 350-40 to align the accounting for costs incurred in a cloud computing arrangement with the guidance on developing internal use software. Specifically, if a cloud computing arrangement is deemed to be a service contract, certain implementation costs are eligible for capitalization. The new guidance prescribes the balance sheet and income statement presentation and cash flow classification for the capitalized costs and related amortization expense. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption.	The Company adopted this guidance on a prospective basis on January 1, 2020. The adoption of this guidance did not have a material impact on the Company’s Consolidated Financial Statements.