Quarterly report pursuant to sections 13 or 15(d)

Goodwill - Additional Information (Detail)

v2.4.0.6
Goodwill - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2012
Jun. 30, 2012
Dec. 31, 2012
Mar. 31, 2012
Goodwill [Line Items]        
Goodwill impairment          $ 2,969