Condensed Parent Company Statements - Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements of Income
Interest expense	$ 27,363	$ 20,752	$ 40,565
Parent Company
Statements of Income
Dividends from subsidiary bank	60,000	74,000	40,000
Other income			5
Total income	60,000	74,000	40,005
Operating expenses	2,550	2,121	2,197
Interest expense	5,298	7,613	7,459
Total expense	7,848	9,734	9,656
Income before income tax and equity in undistributed earnings of subsidiaries	52,152	64,266	30,349
Credit for income taxes	(1,608)	(1,850)	(1,800)
Income before equity in earnings of subsidiaries	53,760	66,116	32,149
Equity in undistributed earnings of subsidiaries	22,188	8,511	27,164
Net income	$ 75,948	$ 74,627	$ 59,313