Note 8 Pension Plans (Net Period Cost) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	$ 96	$ 84	$ 71
Interest Cost on Projected Benefit Obligation	1,890	2,049	2,065
Expected Return on Plan Assets	(1,517)	(1,713)	(1,546)
Transition Obligation	2	2	2
Recognized Actuarial Loss	165	68	178
Net Periodic Pension Expense	$ 636	$ 490	$ 770