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Leases - Details of Right-of-Use Assets and Lease Liabilities (Details) - USD ($)
Jun. 30, 2019
Mar. 31, 2019
Right-of-use assets:    
Operating leases $ 2,076,000  
Finance leases 341,000  
Total 2,417,000 $ 975,000
Lease liabilities:    
Operating leases 2,100,000  
Finance leases 230,000  
Total $ 2,330,000 $ 939,000