Annual report pursuant to Section 13 and 15(d)

Leases - Additional Information (Detail)

v3.4.0.3
Leases - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Capital Leased Assets [Line Items]      
Operating leases expense $ 677 $ 596 $ 563
Machinery and Equipment [Member]      
Capital Leased Assets [Line Items]      
Amortization of machinery and equipment under capital leases $ 40 $ 54 $ 72