Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Income Before Income Taxes (Detail)

v3.6.0.2
Income Taxes - Components of Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Income Taxes [Line Items]      
Income before income taxes, total $ 8,730 $ 21,752 $ 14,710
U.S. [Member]      
Income Taxes [Line Items]      
Income before income taxes, total 8,301 20,799 14,127
China [Member]      
Income Taxes [Line Items]      
Income before income taxes, total $ 429 $ 953 $ 583