Income Taxes (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Current [Abstract]
U.S. and State	$ 15,000	$ 16,000	$ 3,000
Foreign	31,000	35,000	33,000
Deferred [Abstract]
Foreign	5,000	(3,000)	(7,000)
Total income tax expense	51,000	48,000	29,000
Income tax expense differs from statutory federal income tax benefit [Abstract]
Statutory federal income tax benefit	(1,111,000)	(1,429,000)	(1,571,000)
State tax benefit, net of federal taxes	(82,000)	(91,000)	(113,000)
Foreign tax	(27,000)	(35,000)	(25,000)
Nondeductible expenses	111,000	75,000	50,000
Stock compensation tax shortfall	(155,000)	0	0
Subpart F Income	33,000	35,000	43,000
Undistributed foreign earnings	0	9,000	137,000
Foreign tax credits	0	0	(33,000)
Valuation allowance increase	1,035,000	1,210,000	583,000
Expiration and adjustments of NOL's	0	0	757,000
Other	247,000	274,000	201,000
Total income tax expense	51,000	48,000	29,000
Deferred tax assets (liabilities):
Depreciation	88,000	(52,000)
Amortization	121,000	(175,000)
Pension liability	140,000	105,000
Stock based compensation	981,000	1,018,000
Other reserves and accruals	169,000	189,000
Undistributed foreign earnings	(288,000)	(302,000)
Foreign tax credits	68,000	68,000
Net operating losses	11,050,000	10,420,000
Deferred Tax Assets (Liabilities), Gross	12,329,000	11,271,000
Less valuation allowance	(12,183,000)	(11,148,000)
Deferred Tax Assets, Net	146,000	123,000
Net Operating Loss carryforwards [Line Items]
Net operating loss carryforwards	32,000,000
Percentage change in ownership of an entity (in hundredths)	50.00%
Period of change in ownership of entity	3 years
Operating loss carryforwards limitation on use before December 2006	750,000
Operating loss carryforwards limitation on use after December 2006 and before December 2012	2,000,000
Net operating loss carryforwards from income tax deductions in excess of previously recorded tax benefit	1,400,000
Increase in deferred income tax asset	1,058,000	1,246,000
Increase in valuation allowance	1,035,000	1,210,000
Interest on income taxes accrued	0	0
Tax penalties accrued	0	0
U.S. [Member]
Net Operating Loss carryforwards [Line Items]
Net operating loss carryforwards	32,000,000
Net operating loss carryforwards, expiration dates	2018 through 2032
U.K. [Member]
Net Operating Loss carryforwards [Line Items]
Net operating loss carryforwards	$ 29,000