Income Taxes (Details Textual) - USD ($)		12 Months Ended
	Jan. 01, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Operating Loss Carryforwards [Line Items]
Tax Cuts and Jobs Act, Income Tax Expense (Benefit)	$ (3,300,000)	$ (200,000)
Valuation allowance		57,900,000	$ 54,260,000
Undistributed earnings of foreign subsidiaries		3,100,000	1,700,000
Income Tax Expense (Benefit)		221,000	(3,251,000)	$ 236,000
Unrecognized tax benefits that would impact effective tax rate		600,000
Interest and penalty expense (benefit), (less than $.1 million for year ended March 31, 2012)		100,000	100,000
Interest and penalties accrued		500,000	800,000
Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount			$ 400,000
Income Tax Holiday, Aggregate Dollar Amount		500,000
Federal and State Deferred Tax Assets [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance		57,000,000
Deferred Tax Assets in Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance		900,000
INDIA
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax		400,000
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		199,100,000
Foreign Tax Authority [Member] | Hong Kong [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		400,000
Foreign Tax Authority [Member] | MALAYSIA
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		100,000
Foreign Tax Authority [Member] | SINGAPORE
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		200,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 127,500,000