Annual report pursuant to Section 13 and 15(d)

The Company and Its Accounting Policies - Summary of Costs and Estimated Earnings on Contracts (Detail)

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The Company and Its Accounting Policies - Summary of Costs and Estimated Earnings on Contracts (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Mar. 31, 2015
Accounting Policies [Abstract]    
Costs incurred since inception on contracts in progress $ 35,893 $ 64,912
Estimated earnings since inception on contracts in progress 1,185 16,067
Costs and estimated earnings 37,078 80,979
Less billings to date 38,267 69,636
Net under (over) billings $ (1,189)  
Net under (over) billings   $ 11,343