SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CASH AND CASH EQUIVALENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Mar. 31, 2017
Accounting Policies [Abstract]
Cash and cash equivalents	$ 15,691	$ 17,952
Restricted Cash	1,000	1,000
Total	$ 16,691	$ 18,952	$ 10,661	$ 13,566