CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2017	$ 207,345	$ 0	$ 11,921	$ 155,601	$ 66,037	$ (20,087)	$ (6,127)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	8,993				8,993
Other comprehensive income (loss)	(3,306)						(3,306)
Reclassification of certain tax effects from accumulated other comprehensive income					486		(486)
Exercise of stock options	46		2	44
Issuance of common stock	29,568		900	28,668
Stock based compensation	235			235
Dividends: Common Stock	(3,223)				(3,223)
Ending balance at Jun. 30, 2018	239,658	0	12,823	184,548	72,293	(20,087)	(9,919)
Beginning balance at Dec. 31, 2018	244,583	0	12,835	185,174	80,088	(24,352)	(9,162)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	11,380				11,380
Other comprehensive income (loss)	6,536						6,536
Exercise of stock options	481		20	461
Purchase of treasury stock	(9,197)					(9,197)
Restricted stock grants			31	(31)
Stock based compensation	314			314
Dividends: Common Stock	(3,976)				(3,976)
Ending balance at Jun. 30, 2019	$ 250,121	$ 0	$ 12,886	$ 185,918	$ 87,492	$ (33,549)	$ (2,626)