Consolidated Statement of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Shares [Member]	Common Shares [Member]	Retained Earnings [Member]	Treasury Shares [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2018	$ 298,898	$ 9,364	$ 266,901	$ 41,320	$ (17,235)	$ (1,452)
Balance, shares at Dec. 31, 2018		10,120	15,603,499
Net Income	18,330			18,330
Other comprehensive income	10,061					10,061
Stock-based compensation	374		$ 374
Stock-based compensation, shares			29,560
Common stock dividends ($0.11,$0.11,$0.22 and $0.20 per share for three and six months ended June 30 2020 and 2019)	(3,123)			(3,123)
Preferred stock dividends ($16.25 and $32.50 per share for three and six months ended June 30 2019)	(328)			(328)
Ending balance at Jun. 30, 2019	324,212	$ 9,364	$ 267,275	56,199	(17,235)	8,609
Balance, shares at Jun. 30, 2019		10,120	15,633,059
Beginning balance at Mar. 31, 2019	312,057	$ 9,364	$ 266,990	49,421	(17,235)	3,517
Balance, shares at Mar. 31, 2019		10,120	15,624,113
Net Income	8,661			8,661
Other comprehensive income	5,092					5,092
Stock-based compensation	285		$ 285
Stock-based compensation, shares			8,946
Common stock dividends ($0.11,$0.11,$0.22 and $0.20 per share for three and six months ended June 30 2020 and 2019)	(1,719)			(1,719)
Preferred stock dividends ($16.25 and $32.50 per share for three and six months ended June 30 2019)	(164)			(164)
Ending balance at Jun. 30, 2019	324,212	$ 9,364	$ 267,275	56,199	(17,235)	8,609
Balance, shares at Jun. 30, 2019		10,120	15,633,059
Beginning balance at Dec. 31, 2019	330,126		$ 276,422	67,974	(21,144)	6,874
Balance, shares at Dec. 31, 2019			16,687,542
Net Income	14,337			14,337
Other comprehensive income	6,780					6,780
Stock-based compensation	419		$ 419
Stock-based compensation, shares			41,245
Common stock dividends ($0.11,$0.11,$0.22 and $0.20 per share for three and six months ended June 30 2020 and 2019)	(3,599)			(3,599)
Purchase of treasury stock	(11,450)				(11,450)
Purchase of treasury stock, shares			(675,808)
Ending balance at Jun. 30, 2020	336,613		$ 276,841	78,712	(32,594)	13,654
Balance, shares at Jun. 30, 2020			16,052,979
Beginning balance at Mar. 31, 2020	328,167		$ 276,546	73,972	(32,239)	9,888
Balance, shares at Mar. 31, 2020			16,064,010
Net Income	6,504			6,504
Other comprehensive income	3,766					3,766
Stock-based compensation	295		$ 295
Stock-based compensation, shares			14,266
Common stock dividends ($0.11,$0.11,$0.22 and $0.20 per share for three and six months ended June 30 2020 and 2019)	(1,764)			(1,764)
Purchase of treasury stock	(355)				(355)
Purchase of treasury stock, shares			(25,297)
Ending balance at Jun. 30, 2020	$ 336,613		$ 276,841	$ 78,712	$ (32,594)	$ 13,654
Balance, shares at Jun. 30, 2020			16,052,979