Organizational Changes (Details) (Other Restructuring, USD $)	12 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012 Accrued compensation	Nov. 30, 2010 Selling and administrative expenses	Mar. 31, 2012 Selling and administrative expenses
Restructuring Cost and Reserve [Line Items]
Severance costs			$ 200,000	$ 900,000
Legal costs				100,000
Travel expenses				100,000
Total accrual related to organizational changes		1,100,000
Accrued compensation liabilities paid in fiscal 2013	1,000,000
Remaining accrual to be paid in 2014	$ 92,000