Note 11 Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Impairment of Marketable Securities	$ (7)	$ (1,342)	$ 0
Recognized Actuarial Gain (Loss)	(236)	(167)	(70)
Income before Income Tax Provision	13,459	14,682	40,541
Tax Impact	(7,413)	(7,034)	(10,235)
Net Income (Loss)	6,046	7,648	30,306
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Gain on Investments	155	111	49
Impairment of Marketable Securities	(7)	(1,342)	0
Recognized Actuarial Gain (Loss)	(236)	(167)	(70)
Income before Income Tax Provision	(88)	(1,398)	(21)
Tax Impact	(31)	462	(1)
Net Income (Loss)	$ (119)	$ (936)	$ (22)