Note 8 Goodwill and Intangible Assets (Finite-Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 38,087	$ 14,087
Accumulated Amortization	14,889	11,194
Net Intangible Assets	23,198	2,893
Developed Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	16,304	4,800
Accumulated Amortization	3,433	2,458
Net Intangible Assets	12,871	2,342
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	13,020	6,100
Accumulated Amortization	6,965	6,100
Net Intangible Assets	6,055	0
Contract Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	7,155	2,000
Accumulated Amortization	3,718	2,000
Net Intangible Assets	3,437	0
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	1,608	1,187
Accumulated Amortization	773	636
Net Intangible Assets	$ 835	$ 551