Condensed Financial Statements of Parent Company, Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statements of Income [Abstract]
Interest and dividends	$ 165,268	$ 159,294	$ 154,622
Income before income taxes	88,321	77,951	75,313
Income tax benefit	(21,985)	(19,217)	(19,277)
Equity in undistributed net income of subsidiaries	58,016	40,597	44,571
NET INCOME	66,336	58,734	56,036
Parent Company [Member]
Statements of Income [Abstract]
Dividend and other income from subsidiaries	9,900	19,874	13,166
Interest and dividends	9	11	17
Total income	9,909	19,885	13,183
Reimbursement of expenses from subsidiaries	780	821	800
Other expenses	1,469	1,656	1,616
Total expense	2,249	2,477	2,416
Income before income taxes	7,660	17,408	10,767
Income tax benefit	660	729	698
Income before equity in net income of subsidiaries	8,320	18,137	11,465
Equity in undistributed net income of subsidiaries	58,016	40,597	44,571
NET INCOME	$ 66,336	$ 58,734	$ 56,036