CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Comprehensive Income [Member]	Total	Series A Preferred Stock [Member] Preferred Stock [Member]	Series A Preferred Stock [Member] Common Stock [Member]	Series A Preferred Stock [Member] Additional Paid-In Capital [Member]	Series A Preferred Stock [Member] Retained Earnings [Member]	Series A Preferred Stock [Member] Accumulated Comprehensive Income [Member]	Series A Preferred Stock [Member]	Series B Preferred Stock [Member] Preferred Stock [Member]	Series B Preferred Stock [Member] Common Stock [Member]	Series B Preferred Stock [Member] Additional Paid-In Capital [Member]	Series B Preferred Stock [Member] Retained Earnings [Member]	Series B Preferred Stock [Member] Accumulated Comprehensive Income [Member]	Series B Preferred Stock [Member]
Beginning balance at Dec. 31, 2015	$ 4	$ 101	$ 76,335	$ 10,016	$ 0	$ 86,456
Balance (in shares) at Dec. 31, 2015	460,893	10,088,879
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	$ 0	0	14,437	0	14,437
Stock-based compensation	0	0	143	0	0	143
Stock issued, net of expense	$ 0	$ 20	10,490	0	0	10,510
Stock issued, net of expense (in shares)	0	2,015,500
Stock redemption on Series B preferred stock													$ 0	$ 0	$ (23,393)	$ 0	$ 0	$ (23,393)
Stock redemption on Series B preferred stock (in shares)													(23,393)	0
Dividend declared							$ 0	$ 0	$ 0	$ (140)	$ 0	$ (140)	$ 0	$ 0	0	(1,230)	0	(1,230)
Amortization of discount on Series B preferred stock													0	0	203	(203)	0	0
Ending balance at Sep. 30, 2016	$ 4	$ 121	63,778	22,880	0	86,783
Balance (in shares) at Sep. 30, 2016	437,500	12,104,379
Beginning balance at Dec. 31, 2016	$ 4	$ 121	63,960	23,845	0	87,930
Balance (in shares) at Dec. 31, 2016	437,500	12,123,179
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	$ 0	0	3,166	0	3,166
Stock-based compensation	0	0	146	0	0	146
Stock issued in acquisition	$ 0	$ 1	774	0	0	775
Stock issued in acquisition (in shares)	0	108,084
Stock issued, net of expense	$ 0	$ 0	207	0	0	207
Stock issued, net of expense (in shares)	0	14,162
Dividend declared							$ 0	$ 0	$ 0	$ (210)	$ 0	$ (210)
Amortization of discount on Series B preferred stock													$ 0	$ 0	$ 203	$ (203)	$ 0	$ 0
Other comprehensive loss	$ 0	$ 0	0	0	(4)	(4)
Ending balance at Sep. 30, 2017	$ 4	$ 122	65,290	26,598	(4)	92,010
Balance (in shares) at Sep. 30, 2017	437,500	12,245,425
Beginning balance at Jun. 30, 2017					6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income						1,259
Ending balance at Sep. 30, 2017	$ 4	$ 122	$ 65,290	$ 26,598	$ (4)	$ 92,010
Balance (in shares) at Sep. 30, 2017	437,500	12,245,425