Note 13 Accumulated Other Comprehensive Income (Loss) (AOCI Change) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2013		Mar. 31, 2013
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 2,729		$ (3,093)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	(18)		31
Accumulated Other Comprehensive Income (Loss), Pension, Tax	(1,941)
Foreign Currency [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	8,897		2,982
Other Comprehensive Income (Loss) before Reclassifications	5,915
Net Current Period Other Comprehensive Income (Loss)	5,915
Unrealized (Gains) Losses on Securities [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(33)	[1]	60	[1]
Other Comprehensive Income (Loss) before Reclassifications	(36)
Net Losses (Gains) Reclassification from Accumulated Other Comprehensive Income (Loss)	(57)
Net Current Period Other Comprehensive Income (Loss)	(93)
Defined Benefit Pension Plans [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(6,135)	[2]	(6,135)	[2]
Other Comprehensive Income (Loss) before Reclassifications	0
Net Current Period Other Comprehensive Income (Loss)	0
Accumulated Other Comprehensive Income (Loss) [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	2,729		(3,093)
Other Comprehensive Income (Loss) before Reclassifications	5,879
Net Losses (Gains) Reclassification from Accumulated Other Comprehensive Income (Loss)	(57)
Net Current Period Other Comprehensive Income (Loss)	$ 5,822

[1] Net of Taxes of $(18) at September 30, 2013, and $31 at March 31, 2013.

[2] Net of Taxes of $(1,941).