Goodwill and Intangible Assets - Schedule of Intangible Assets, Excluding Goodwill (Details) - USD ($) $ in Thousands	Aug. 31, 2019	Feb. 28, 2019
Goodwill And Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 90,231	$ 90,449
Finite-Lived Intangible Assets, Accumulated Amortization	49,266	45,955
Finite-Lived Intangible Assets, Net	40,965	44,494
Intangible assets, net	115,769	119,449
Trademarks [Member]
Goodwill And Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	74,804	74,955
Customer Relationships [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	49,541	49,743
Finite-Lived Intangible Assets, Accumulated Amortization	31,240	29,746
Finite-Lived Intangible Assets, Net	18,301	19,997
Trademarks and Tradenames [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	485	485
Finite-Lived Intangible Assets, Accumulated Amortization	423	413
Finite-Lived Intangible Assets, Net	62	72
Patented Technology [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	31,290	31,290
Finite-Lived Intangible Assets, Accumulated Amortization	10,883	9,523
Finite-Lived Intangible Assets, Net	20,407	21,767
Patents [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	5,374	5,390
Finite-Lived Intangible Assets, Accumulated Amortization	3,295	2,907
Finite-Lived Intangible Assets, Net	2,079	2,483
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	2,025	1,966
Finite-Lived Intangible Assets, Net	$ 116	$ 175