SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Earnings per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Net income available to common shareholders													$ 36,497	$ 26,477	$ 19,972
Basic weighted average shares outstanding													17,659,625	16,318,868	15,187,637
Plus: common stock equivalents													284,060	196,130	247,359
Diluted weighted-average shares outstanding													17,943,685	16,514,998	15,434,996
Earnings per share:
Basic	$ 0.57	$ 0.57	$ 0.45	$ 0.47	$ 0.44	$ 0.43	$ 0.41	$ 0.35	$ 0.28	$ 0.35	$ 0.34	$ 0.34	$ 2.06	$ 1.62	$ 1.31
Diluted	$ 0.56	$ 0.56	$ 0.45	$ 0.46	$ 0.43	$ 0.43	$ 0.4	$ 0.34	$ 0.28	$ 0.35	$ 0.34	$ 0.33	$ 2.03	$ 1.60	$ 1.29