Note 15 Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Restructuring Reserve [Roll Forward]
Charges	$ 0	$ 0	$ 759
Other Restructuring Costs	217
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	72	106	1,205
Charges	0	(30)	100	[1]
Cash Payments	0	0	(1,198)
Currency Translation Adjustment	(3)	(4)	(1)
Ending Balance	69	72	106
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	127	379	0
Charges	0	0	442	[1]
Cash Payments	(127)	(252)	(63)
Currency Translation Adjustment	0	0	0
Ending Balance	0	127	379
Total Restructuring on Severance and Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	199	485	1,205
Charges	0	(30)	542	[1]
Cash Payments	(127)	(252)	(1,261)
Currency Translation Adjustment	(3)	(4)	(1)
Ending Balance	$ 69	$ 199	$ 485

[1] Excludes $217,000 related to impairment of assets due to the consolidation of facilities.