Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 80,000	$ 77,846
Undistributed earnings of foreign subsidiaries	1,300	1,000
Income Tax Expense (Benefit)	236	6	$ (1,054)
Unrecognized tax benefits that would impact effective tax rate	1,000
Interest and penalty expense (benefit), (less than $.1 million for year ended March 31, 2012)	100	100	$ 300
Interest and penalties accrued	800	$ 800
Federal and State Deferred Tax Assets [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance	79,600
Deferred Tax Assets in Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance	400
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	187,600
Operating loss carryforwards, excess income tax benefit related to share-based compensation	4,400
Foreign Tax Authority [Member] | Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	300
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	130,500
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Significant change in unrecognized tax benefits reasonably possible, upper end	0
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Significant change in unrecognized tax benefits reasonably possible, upper end	$ 100