Income Taxes (Details Textual) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 79,200,000
Increase in valuation allowance during period	500,000
Undistributed earnings of foreign subsidiaries	1,700,000
Unrecognized tax benefits that would impact effective tax rate	4,200,000
Significant change in unrecognized tax benefits reasonably possible, lower end	0
Significant change in unrecognized tax benefits reasonably possible, upper end	400,000
Interest and penalty expense (benefit), (less than $.1 million for year ended March 31, 2012)	100,000	(100,000)	100,000
Interest and penalties accrued	1,300,000	1,300,000
Federal and State Deferred Tax Assets [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance	78,900,000
Deferred Tax Assets in Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance	300,000
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	168,800,000
Operating loss carryforwards, excess income tax benefit related to share-based compensation	1,100,000
Foreign Tax Authority [Member] | Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	2,000,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 176,600,000