Parent Company Only Financial Statements - Condensed - Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income:
Interest income	$ 448,798	$ 418,508	$ 434,068
Expense:
Other expenses	15,686	8,349	16,494
Interest expense	28,117	27,246	42,340
Income before income taxes	173,692	201,124	92,526
Income tax benefit	40,026	46,801	17,672
Net income available to common shareholders	133,666	154,323	74,854
Parent Company
Income:
Interest income	140	87	196
Other income	805	527	553
Dividends from bank subsidiary	161,000	73,000	0
Undistributed earnings from equity investment in bank subsidiary	(18,187)	88,944	80,996
Total income	143,758	162,558	81,745
Expense:
Compensation and employee benefits	1,656	1,358	1,234
Other expenses	1,042	1,033	2,241
Interest expense	9,825	7,870	4,933
Total expense	12,523	10,261	8,408
Income before income taxes	131,235	152,297	73,337
Income tax benefit	(2,431)	(2,026)	(1,517)
Net income available to common shareholders	$ 133,666	$ 154,323	$ 74,854