Note 9 Pension Plans (Net Amount Recognized) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Change in Projected Benefit Obligation
Projected Benefit Obligation at the Beginning of the Year	$ 41,459	$ 37,872
Service Cost	108	96	84
Interest Cost	1,886	1,890	2,049
Actuarial (Gain) Loss	(636)	4,984
Benefits Paid	(1,498)	(1,675)
Foreign Currency Adjustment	3,239	(1,708)
Projected Benefit Obligation at Year End	44,558	41,459	37,872
Change in Plan Assets
Fair Value of Plan Assets at the Beginning of the Year	25,129	22,871
Actual Return on Plan Assets	1,711	3,733
Employer Contribution	1,022	902
Benefits Paid from Assets	(1,030)	(1,305)
Foreign Currency Adjustment	2,181	(1,072)
Plan Assets at Fair Value at Year End	29,013	25,129	22,871
Underfunded Status of the Plan at Year End	(15,545)	(16,330)
Pension Liability Recognized on the Balance Sheet Due after One Year	15,545	16,330
Plans with Projected Benefit Obligation and Accumulated Benefit Obligation in Excess of Plan Assets:
Projected Benefit Obligation at Year End	44,558	41,459
Accumulated Benefit Obligation at Year End	43,910	40,696
Plan Assets at Fair Value at Year End	29,013	25,129
Amounts Recognized in Accumulated Other Comprehensive Income (Loss):
Unrecognized Actuarial Loss, Gross of Tax	(7,743)	(8,076)
Amount Recognized as Component of Stockholders Equity (Pretax)	(7,743)	(8,076)
Accumulated Benefit Obligation at Year End	$ 43,910	$ 40,696