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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CASH, CASH EQUIVALENTS, AND RESTRICTED CASH (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2017
Accounting Policies [Abstract]      
Cash and Cash Equivalents $ 14,294 $ 17,872  
Restricted Cash 1,000 1,000  
Cash, Cash Equivalents, and Restricted Cash $ 15,294 $ 18,872 $ 18,952