Adoption of ASU 2018-07 Accounting Standards Update 2018-07 [Member] Adoption of ASU 2016-01 Accounting Standards Update 2016-01 [Member] Assets Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Common Stock Common Stock [Member] Asset Derivatives Derivative assets Derivative Asset Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Goodwill, beginning balance Goodwill, ending balance Goodwill Income Statement [Abstract] Income Statement [Abstract] Total interest expense Interest Expense Net Interest Income Interest Income (Expense), Net Back-to-back swaps Interest Rate Swap [Member] Salaries and employee benefits Labor and Related Expense Commitments to originate loans Loan Origination Commitments [Member] Market comparable properties Valuation, Market Approach [Member] Measurement Input Type [Domain] Measurement Input Type [Domain] Marketability discount Measurement Input, Discount Rate [Member] Total non-interest expense Noninterest Expense Other Other Assets Unrealized gain (loss) on available-for-sale securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Unrealized gain (loss) on available-for-sale securities, net of income tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Other non-interest expense Other Noninterest Expense Preferred Stock Preferred Stock [Member] Private Equity Funds [Member] Financial Instruments [Domain] Financial Instruments [Domain] Accounting Standards Update [Domain] Accounting Standards Update [Domain] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Cover page. Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Entity Interactive Data Current Entity Interactive Data Current Amendment Flag Amendment Flag Amendment description Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Shell Company Entity Shell Company Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Product and Service [Domain] Product and Service [Domain] Bank Subsidiaries [Member]