INCOME TAXES (Schedule of Income tax expense) (Details) - USD ($) $ 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, 2017	Dec. 31, 2016	Dec. 31, 2015
Current
Federal									$ 7,920	$ 3,466	$ 2,873
State and local									2,499	492	141
Total current									10,419	3,958	3,014
Deferred
Federal									1,045	(795)	(622)
State and local									(255)	(118)	167
Total deferred									790	(913)	(455)
Total income tax expense	$ 5,216	$ 2,562	$ 1,757	$ 1,674	$ (433)	$ 1,072	$ 1,268	$ 1,138	$ 11,209	$ 3,045	$ 2,559