Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
3 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Income Taxes (Textual) [Abstract]        
Income tax benefit (expense) $ 1,059,000 $ 1,852,000 $ 2,032,000 $ (11,376,000)
Effective tax rate     37.20% 41.90%
Provision for discret tax benefit (expense)       12,500,000
Discrete tax benefit (expense)   $ 2,100,000 $ (181,000) $ 2,100,000