Quarterly report pursuant to sections 13 or 15(d)

Potentially Dilutive Shares (Detail)

v2.4.0.6
Potentially Dilutive Shares (Detail)
3 Months Ended 9 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Earnings Per Share [Line Items]        
Potentially dilutive shares 25,458 41,390 26,591 40,753