EARNINGS PER COMMON SHARE (Computation of Basic and Diluted Earnings per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic
Net income per consolidated statements of operations	$ 7,113	$ 3,845	$ 19,268	$ 9,044
Less: Earnings allocated to participating securities	(56)	(74)	(152)	(174)
Net income available to common stockholders	$ 7,057	$ 3,771	$ 19,116	$ 8,870
Weighted average common shares outstanding including participating securities	8,202,841	4,633,012	8,195,363	4,632,221
Less: Weighted average participating securities	(67,443)	(89,087)	(69,143)	(89,087)
Weighted average common shares outstanding	8,135,398	4,543,925	8,126,220	4,543,134
Basic earnings per share (in dollars per share)	$ 0.87	$ 0.83	$ 2.35	$ 1.95
Diluted
Net income allocated to common stockholders	$ 7,057	$ 3,771	$ 19,116	$ 8,870
Weighted average common shares outstanding for basic earnings per common share	8,135,398	4,543,925	8,126,220	4,543,134
Add: Dilutive effects of assumed exercise of stock options	154,334	33,000	154,801	33,000
Average shares and dilutive potential common shares	8,289,732	4,576,925	8,281,021	4,576,134
Diluted earnings per share (in dollars per share)	$ 0.85	$ 0.82	$ 2.31	$ 1.94