Note 2 Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Schedule of Allowance for Accounts Receivable, Ship and Debit [Table Text Block]

Balance March 31, 2010		$	1,419
	Additions		5,467
	Deductions		(5,486)
Balance March 31, 2011			1,400
	Additions		5,858
	Deductions		(6,157)
Balance March 31, 2012			1,101
	Additions		5,842
	Deductions		(5,547)
Balance March 31, 2013		$	1,396

Schedule of Excess Inventory Reserve [Table Text Block]

Balance at March 31, 2010		$	35,574
	Utilization or sale		(9,618)
	Scrap		(2,230)
	Additional accrual		5,288
	Foreign currency translation adjustments		422
Balance at March 31, 2011			29,436
	Utilization or sale		(2,543)
	Scrap		(2,313)
	Additional accrual		3,921
	Foreign currency translation adjustments		(363)
Balance at March 31, 2012			28,138
	Utilization or sale		(2,242)
	Scrap		(3,662)
	Additional accrual		3,385
	Foreign currency translation adjustments		(330)
Balance at March 31, 2013		$	25,289