Note 16 Income Taxes (Narratives) (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	$ 86,800,000
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	10,500,000
Expiration of Operating Loss Carryforwards	from fiscal 2014 to 2023
Valuation Allowance and Other Reserves, Deferred Tax Asset, Change in Amount	124,000
Deferred Tax Assets, Valuation Allowance and Other Reserves	3,783,000	3,659,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	864,000
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(827,000)	(3,555,000)	(1,492,000)
Increases in Balances Related to Tax Positions Taken during Prior Periods	281,000	285,000	362,000
Increases in Balances Related to Tax Positions Taken during the Current Period	964,000	803,000	3,682,000
Unrecognized Tax Benefits, Period Increase (Decrease)	6,700,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 828,000