Note 16 Income Taxes (Deferred Tax Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Deferred Tax Assets, Net [Abstract]
Reserves and Allowances	$ 6,254	$ 6,369
Other Liabilities and Accruals	913	2,081
Total Short Term Deferred Tax Assets	7,167	8,450
Other Long Term Liabilities and Accruals	2,583	1,709
Depreciable Assets	1,959	3,114
Net Operating Loss Carryforward	17,261	18,469
Share-based Compensation	4,431	3,696
Credits Carryforward	2,396	2,300
Total Long Term Deferred Tax Assets	28,630	29,288
Total Deferred Tax Assets	35,797	37,738
Less: Valuation Allowance and Other Reserves	(3,783)	(3,659)
Net Deferred Tax Asset	$ 32,014	$ 34,079