Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Additional Information (Detail)

v3.3.0.814
Revenue Recognition - Additional Information (Detail) - USD ($)
$ in Thousands
6 Months Ended
Sep. 30, 2015
Mar. 31, 2015
Revenue Recognition [Line Items]    
Company recognizes planned manufacturing process 28 days  
Direct labor hours worked on contracts 575 hours  
Receivables billed but not paid under retainage provisions in its customer contracts $ 1,115 $ 1,751
Minimum [Member]    
Revenue Recognition [Line Items]    
Substantial completion of manufacturing process 95.00%