Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of cash flows specific transaction amounts [Abstract]
Income taxes paid	$ 15,259	$ 46,648	$ 24,809
Interest paid on deposits and borrowings	24,429	42,968	83,997
Noncash transfers from loans to other real estate	770	635	8,598
Investment in tax credit partnership not funded	10,647	5,893	5,000
Finance right-of-use assets resulting from lease liabilities	92		9,326
Operating right-of-use assets resulting from lease liabilities	$ 9,666	3,774	$ 31,182
Transfer of long-term FHLB advances to short-term		$ 651