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Accounts Receivable (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Mar. 31, 2014
Accounts Notes And Loans Receivable [Line Items]    
Net Accounts receivable $ 4,337 $ 5,102
Continuing Operations
   
Accounts Notes And Loans Receivable [Line Items]    
Billed 3,072 3,629
Unbilled 1,265 1,473
Net Accounts receivable 4,337 5,102
Discontinued Operations
   
Accounts Notes And Loans Receivable [Line Items]    
Net Accounts receivable $ 0 $ 0