ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in prepaid expense and other assets	$ 412	$ 264
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	43,297	$ 16,031	$ 22,006	$ 22,511
Accounting Standards Update 2016-18 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in prepaid expense and other assets	69
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 1,258		$ 1,189