SIGNIFICANT ACCOUNTING POLICIES (Details 1) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Cash and cash equivalents	$ 22,769	$ 25,452
Funds held by lender and restricted cash	2,379	198
Total cash, cash equivalents, and restricted cash	25,148	25,650	$ 15,980	$ 11,932
Restricted cash and cash equivalents	$ 2,379	$ 198