Condensed Financial Statements Of Parent Company (Statements of Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments	$ 3,472	$ 1,938	$ 622
Interest expense	19,521	29,987	25,612
Income before income taxes	38,754	39,583	35,096
Income tax expense	7,428	7,717	7,024
Net Income	31,326	31,866	28,072
Parent Company [Member]
Dividends from subsidiaries	10,000	16,757	10,600
Other dividends and interest income	33	54	28
Management and service fees from subsidiaries	1,856	1,542	1,555
Total income	11,889	18,353	12,183
Interest expense	1,109	949	899
Operating expenses	3,306	3,755	2,565
Total expenses	4,415	4,704	3,464
Income before income taxes	7,474	13,649	8,719
Income tax expense	(519)	(276)	(374)
Income before equity in undistributed income of subsidiaries	7,993	13,925	9,093
Equity in undistributed income of subsidiaries	23,333	17,941	18,979
Net Income	$ 31,326	$ 31,866	$ 28,072