XML 62 R50.htm IDEA: XBRL DOCUMENT v3.6.0.2
Property, Plant and Equipment - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Property Plant And Equipment [Abstract]      
Depreciation expense $ 2,201 $ 2,079 $ 1,977