Annual report pursuant to section 13 and 15(d)

Goodwill - Additional Information (Detail)

v2.4.0.8
Goodwill - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Goodwill And Intangible Assets [Line Items]    
Goodwill impairment $ 1,119 $ 2,969