Share Based Awards (Details 4) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Schedule of Employee Stock Options and Performance Based Awards by Nonvested Stock Options
Non-Vested Number of Shares Outstanding Beginning Balance	778,319	803,036	1,222,000
Weighted Average Fair Value Price Outstanding Beginning Balance	$ 10.76	$ 8.08	$ 10
Non-Vested Number of Shares Granted			110,000
Weighted Average Fair Value Price Granted	$ 8.22	$ 13.32	$ 10
Non-Vested Number of Shares Vested	(557,000)	(459,000)	380,000
Weighted Average Fair Value Price Vested	$ 8.43	$ 7.22	$ 10
Non-Vested Number of Shares Forfeited	201,000	313,000
Share Based Compensation Arrangement by Employee Stock Option and Performance Based Award Options Nonvested, Forfeited Canceled	(329,288)	(171,462)	(148,942)
Share Based Compensation Arrangement by Employee Stock Option and Performance Based Award Options Nonvested Weighted Average Fair Value Forfeited or Canceled	$ 9.92	$ 11.55	$ 9.41
Non-Vested Number of Shares Outstanding Ending Balance	804,340	778,319	803,036
Weighted Average Fair Value Price Outstanding Ending Balance	$ 9.89	$ 10.76	$ 8.08