Description of Business and Summary of Significant Accounting Policies Intangible Assets Table (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Feb. 28, 2014
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 74,708	$ 81,959
Finite-Lived Intangible Assets, Accumulated Amortization	26,020	22,511
Finite-Lived Intangible Assets, Net	48,688us-gaap_FiniteLivedIntangibleAssetsNet	59,448us-gaap_FiniteLivedIntangibleAssetsNet
Intangible assets, net	158,455	174,312
Customer Relationships [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	62,506	68,231
Finite-Lived Intangible Assets, Accumulated Amortization	19,316	16,381
Finite-Lived Intangible Assets, Net	43,190	51,850
Trademarks and Tradenames [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	415	415
Finite-Lived Intangible Assets, Accumulated Amortization	383	377
Finite-Lived Intangible Assets, Net	32	38
Patents [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	8,831	10,357
Finite-Lived Intangible Assets, Accumulated Amortization	3,365	2,879
Finite-Lived Intangible Assets, Net	5,466	7,478
Licensing Agreements [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,400	1,400
Finite-Lived Intangible Assets, Accumulated Amortization	1,400	1,400
Finite-Lived Intangible Assets, Net	0	0
Contractual Rights [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,556	1,556
Finite-Lived Intangible Assets, Accumulated Amortization	1,556	1,474
Finite-Lived Intangible Assets, Net	0	82
Trademarks [Member]
Goodwill and Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 109,767	$ 114,864

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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