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Net Income (Loss) Per Share (Details) (USD $)
 3 Months Ended 9 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Net Income (Loss) Per Share [Abstract]        
Net income (loss) $ 935,000 $ (21,827,000) $ (17,860,000) $ (35,571,000)
Basic (in shares) 14,463,782 12,517,269 14,283,080 12,417,292
Effect of dilutive stock options and warrants (in shares) 61,831 0 0 0
Diluted shares (in shares) 14,525,613 12,517,269 14,283,080 12,417,292
Net income (loss) per share [Abstract]        
Basic (in dollars per share) $ 0.06 $ (1.74) $ (1.25) $ (2.86)
Diluted (in dollars per share) $ 0.06 $ (1.74) $ (1.25) $ (2.86)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Exercise price of antidilutive options and warrants, minimum (in dollars per share) $ 5.83 $ 1.80 $ 1.80 $ 1.80
Exercise price of antidilutive options and warrants, maximum (in dollars per share) $ 15.06 $ 15.06 $ 15.06 $ 15.06
Stock Options [Member]
        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive shares excluded from computation of earnings per share (in shares) 1,500,933 1,442,284 1,648,183 1,442,284
Warrants [Member]
        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive shares excluded from computation of earnings per share (in shares) 735,484 546,283 735,484 546,283