Quarterly report pursuant to Section 13 or 15(d)

Earnings and Net Income (Loss) per Common Share (Details)

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Earnings and Net Income (Loss) per Common Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 50,307 50,307 168,211 56,532
Basic net income (loss) per common share        
Net income (loss) $ 12,583 $ 7,738 $ 16,217 $ 21,325
Weighted-average common shares outstanding 31,689,887 30,947,064 31,506,745 30,672,803
Basic net income (loss) per common share (in dollars per share) $ 0.40 $ 0.25 $ 0.51 $ 0.70
Diluted net income (loss) per common share        
Net income (loss) $ 12,583 $ 7,738 $ 16,217 $ 21,325
Weighted-average common shares outstanding 31,689,887 30,947,064 31,506,745 30,672,803
Diluted (in shares) 32,224,559 31,871,097 32,086,570 31,725,724
Diluted net income (loss) per common share (in dollars per share) $ 0.39 $ 0.24 $ 0.51 $ 0.67
Equity Option
        
Diluted net income (loss) per common share        
Weighted Average Number Diluted Shares Outstanding Adjustment 473,364 868,110 543,376 1,028,056
Restricted Stock Units
        
Diluted net income (loss) per common share        
Weighted Average Number Diluted Shares Outstanding Adjustment 61,308 55,923 36,449 24,865