CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balances at Dec. 31, 2014	$ 74,568	$ 69,719	$ 1,495	$ 145,782
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	12,446	0	12,446
Other comprehensive income (loss)	0	0	(1,174)	(1,174)
Cash dividends paid	0	(4,573)	0	(4,573)
Purchase of warrant	(5,675)	0	0	(5,675)
Stock options exercised	222	0	0	222
Stock based compensation expense	204	0	0	204
Balances at Dec. 31, 2015	69,319	77,592	321	147,232
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	12,174	0	12,174
Other comprehensive income (loss)	0	0	(2,243)	(2,243)
Cash dividends paid	0	(5,933)	0	(5,933)
10% common stock dividend	17,622	(17,638)	0	(16)
Stock issued to acquire subsidiary, net	22,041	0	0	22,041
Stock options exercised	751	0	0	751
Stock based compensation expense	178	0	0	178
Balances at Dec. 31, 2016	109,911	66,195	(1,922)	174,184
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	14,819	0	14,819
Other comprehensive income (loss)	0	0	216	216
Cash dividends paid	0	(6,398)	0	(6,398)
Reclassify stranded tax effects within AOCI	0	367	(367)	0
Stock options exercised	317	0	0	317
Stock based compensation expense	217	0	0	217
Balances at Dec. 31, 2017	$ 110,445	$ 74,983	$ (2,073)	$ 183,355