Goodwill and Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Nov. 30, 2017	Feb. 28, 2017
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	11 years	8 years 9 months 18 days
Gross Carrying Amount	$ 78,623	$ 61,947
Accumulated Amortization	27,877	23,311
Amortized intangible assets, Net	$ 50,746	$ 38,636
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	16 years 2 months 12 days	8 years
Gross Carrying Amount	$ 19,625	$ 3,642
Accumulated Amortization	2,109	1,234
Amortized intangible assets, Net	$ 17,516	$ 2,408
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	8 years 3 months 18 days	8 years 10 months 25 days
Gross Carrying Amount	$ 58,040	$ 57,347
Accumulated Amortization	24,884	21,336
Amortized intangible assets, Net	$ 33,156	$ 36,011
Noncompete [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	1 month 6 days	9 months 18 days
Gross Carrying Amount	$ 175	$ 175
Accumulated Amortization	130	86
Amortized intangible assets, Net	$ 45	$ 89
Patent [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	3 months 18 days	1 year
Gross Carrying Amount	$ 783	$ 783
Accumulated Amortization	754	655
Amortized intangible assets, Net	$ 29	$ 128