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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Net income available to common shareholders									$ 44,170	$ 36,497	$ 26,477
Basic weighted average shares outstanding									18,965,305	17,659,625	16,318,868
Plus: common stock equivalents									183,340	284,060	196,130
Diluted weighted average shares outstanding									19,148,645	17,943,685	16,514,998
Earnings per share:
Basic	$ 0.56	$ 0.56	$ 0.63	$ 0.58	$ 0.57	$ 0.57	$ 0.45	$ 0.47	$ 2.33	$ 2.07	$ 1.62
Diluted	$ 0.55	$ 0.56	$ 0.62	$ 0.57	$ 0.56	$ 0.56	$ 0.45	$ 0.46	$ 2.31	$ 2.03	$ 1.60