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Schedule II Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Total Allowance for Doubtful Accounts      
Balance at Beginning of Year $ 416 $ 466 $ 327
Additions Charged to Expenses 509 279 571
Deductions [1] (339) (329) (432)
Balance At End of Year $ 586 $ 416 $ 466
[1] The deductions related to allowance for doubtful accounts represent accounts receivable which are written off.