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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Cash and cash equivalents $ 17,353 $ 5,702    
Restricted cash 235 6,735    
Total cash and cash equivalents and restricted cash 17,588 $ 12,437 $ 14,200 $ 13,939
Cash and Cash Equivalents [Member]        
Cash and cash equivalents 17,353   13,965  
Restricted cash 235   235  
Total cash and cash equivalents and restricted cash $ 17,588   $ 14,200