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Earning Per Share - Additional Information (Detail)
3 Months Ended
Jun. 30, 2012
Stock Options
 
Earnings Per Share [Line Items]  
Anti-Dilutive Shares excluded from the computation of Diluted Earnings Per Share 255,000
Restricted Stock
 
Earnings Per Share [Line Items]  
Anti-Dilutive Shares excluded from the computation of Diluted Earnings Per Share 319,001