Note 16 Income Taxes (Income Taxes Provision Breakdown) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Current Income Tax Expense (Benefit) [Abstract]
Current Federal Tax Expense (Benefit)	$ 1,795	$ 3,080	$ 8,125
Current State and Local Tax Expense (Benefit)	278	467	836
Current Foreign Tax Expense (Benefit)	2,466	4,992	2,690
Current Income Tax Expense (Benefit)	4,539	8,539	11,651
Deferred Income Tax Expense (Benefit) [Abstract]
Deferred Federal Income Tax Expense (Benefit)	1,734	772	(7,253)
Deferred State and Local Income Tax Expense (Benefit)	(102)	326	(1,054)
Deferred Foreign Income Tax Expense (Benefit)	863	598	2,909
Deferred Income Tax Expense (Benefit)	2,495	1,696	(5,398)
Total Income Tax Provision	$ 7,034	$ 10,235	$ 6,253