Derivative Financial Instruments - Forward Sales Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Financial Instruments
Notional amount	$ 4,000
Interest rate lock commitments | Other assets
Derivative Financial Instruments
Notional amount	19,384	$ 45,004
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other assets	206	1,201
Interest rate lock commitments | Other liabilities
Derivative Financial Instruments
Notional amount	499	118
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other liabilities	6	1
Foreign currency forward contracts | Other assets
Derivative Financial Instruments
Notional amount	1,884	978
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other assets	10	32
Foreign currency forward contracts | Other liabilities
Derivative Financial Instruments
Notional amount	41,002	84,964
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other liabilities	439	2,662
Interest rate lock commitments and forward sales commitments | Designated as hedging instrument
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Net gains (losses)	(2,343)	(8,662)	$ (2,763)
Interest rate lock commitments and forward sales commitments | Other assets | Designated as hedging instrument
Derivative Financial Instruments
Notional amount	21,268	45,982
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other assets	216	1,233
Interest rate lock commitments and forward sales commitments | Other liabilities | Designated as hedging instrument
Derivative Financial Instruments
Notional amount	41,501	85,082
Fair values of derivative assets and liabilities recorded in consolidated balance sheets
Fair value recorded in other liabilities	445	2,663
Mortgage revenue. | Interest rate lock commitments | Designated as hedging instrument
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Gross gains	1,702	9,667	3,988
Mortgage revenue. | Foreign currency forward contracts | Designated as hedging instrument
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income
Gross (losses)	$ (4,045)	$ (18,329)	$ (6,751)