Note 2 Summary of Significant Accounting Policies (Excess and Obsolete Inventory Reserve) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Excess and Obsolete Inventory Reserve [Roll Forward]
Beninning Balance	$ 28,138	$ 29,436	$ 35,574
Utilization or Sale	(2,242)	(2,543)	(9,618)
Scrap	(3,662)	(2,313)	(2,230)
Additional Accrual	3,385	3,921	5,288
Foreign Currency Translation Adjustments	(330)	(363)	422
Ending Balance	$ 25,289	$ 28,138	$ 29,436