Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 77,900	$ 76,420
Undistributed earnings of foreign subsidiaries	1,000	700
Significant change in unrecognized tax benefits reasonably possible, lower end	0
Significant change in unrecognized tax benefits reasonably possible, upper end	100
Interest and penalty expense (benefit), (less than $.1 million for year ended March 31, 2012)	100	$ 300	$ 200
Interest and penalties accrued	800
Federal and State Deferred Tax Assets [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance	77,600
Deferred Tax Assets in Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance	300
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	172,900
Operating loss carryforwards, excess income tax benefit related to share-based compensation	4,300
Foreign Tax Authority [Member] | Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	200
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 145,000