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Summary of Significant Accounting Policies (Detail Textuals 3) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Accounting Policies [Abstract]      
Cash paid for income taxes $ 2,800 $ 5,400 $ 8,500
Cash paid for interest, including debt origination costs 10,100 9,100 8,800
Amortization of commission for products $ (1,656) $ (1,754) $ (1,662)