Annual report pursuant to Section 13 and 15(d)

The Company and Its Accounting Policies - Accompanying Consolidated Balance Sheets (Detail)

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The Company and Its Accounting Policies - Accompanying Consolidated Balance Sheets (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Mar. 31, 2015
Accounting Policies [Abstract]    
Unbilled revenue $ 11,852 $ 18,665
Progress payments reducing inventory (Note 2) (4,641) (3,143)
Customer deposits (8,400) (4,179)
Net under (over) billings $ (1,189)  
Net under (over) billings   $ 11,343