Description of Business and Summary of Significant Accounting Policies Intangible Assets Table (Details) - USD ($) $ in Thousands	Feb. 28, 2017	Feb. 29, 2016
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 108,520	$ 109,174
Finite-Lived Intangible Assets, Accumulated Amortization	40,213	32,370
Finite-Lived Intangible Assets, Net	68,307	76,804
Intangible assets, net	176,289	185,022
Customer Relationships [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	64,780	65,290
Finite-Lived Intangible Assets, Accumulated Amortization	27,830	23,527
Finite-Lived Intangible Assets, Net	36,950	41,763
Trademarks and Tradenames [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	415	415
Finite-Lived Intangible Assets, Accumulated Amortization	395	389
Finite-Lived Intangible Assets, Net	20	26
Patented Technology [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	31,290	31,290
Finite-Lived Intangible Assets, Accumulated Amortization		1,360
Finite-Lived Intangible Assets, Net	27,209	29,930
Patents [Member]
Goodwill and Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	8,494	8,638
Finite-Lived Intangible Assets, Accumulated Amortization	4,775	4,079
Finite-Lived Intangible Assets, Net	3,719	4,559
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	2,141	2,141
Finite-Lived Intangible Assets, Accumulated Amortization	1,732	1,615
Finite-Lived Intangible Assets, Net	409	526
Trademarks [Member]
Goodwill and Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 107,982	$ 108,218