Note 8 Pension Plans (Assumptions Used in Calculations) (Details)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Maximum [Member]
Defined Benefit Plan, Assumptions Used in Calculations [Line Items]
Discount Rate	4.70%	5.70%
Expected Long Term Rate of Return on Assets	7.00%	7.00%
Salary Scale	6.00%	6.00%
Minimum [Member]
Defined Benefit Plan, Assumptions Used in Calculations [Line Items]
Discount Rate	4.00%	5.20%
Expected Long Term Rate of Return on Assets	6.40%	6.70%
Salary Scale	1.50%	1.50%