Note 10 Pension Plans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	$ 25	$ 21	$ 74	$ 63
Interest Cost on Projected Benefit Obligation	478	501	1,417	1,538
Expected Return on Plan Assets	(385)	(422)	(1,143)	(1,291)
Recognized Actuarial Loss	42	19	126	57
Net Periodic Pension Expense	$ 160	$ 119	$ 474	$ 367