Annual report pursuant to Section 13 and 15(d)

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

v2.4.0.8
Income Taxes - Components of Income Before Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Income Taxes [Line Items]      
Income before income taxes, total $ 14,710 $ 15,577 $ 16,677
U.S. [Member]
     
Income Taxes [Line Items]      
Income before income taxes, total 14,127 14,597 16,708
China [Member]
     
Income Taxes [Line Items]      
Income before income taxes, total $ 583 $ 980 $ (31)