Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	10 years 9 months 18 days	8 years 9 months 18 days
Gross Carrying Amount	$ 78,623	$ 61,947
Accumulated Amortization	29,369	23,311
Amortized intangible assets, Net	$ 49,254	$ 38,636
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	16 years	8 years
Gross Carrying Amount	$ 19,625	$ 3,642
Accumulated Amortization	2,408	1,234
Amortized intangible assets, Net	$ 17,217	$ 2,408
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	8 years 1 month 6 days	8 years 10 months 24 days
Gross Carrying Amount	$ 58,040	$ 57,347
Accumulated Amortization	26,039	21,336
Amortized intangible assets, Net	$ 32,001	$ 36,011
Noncompete [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	1 year 1 month 6 days	9 months 18 days
Gross Carrying Amount	$ 175	$ 175
Accumulated Amortization	140	86
Amortized intangible assets, Net	$ 35	$ 89
Patent [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	4 months 24 days	1 year
Gross Carrying Amount	$ 783	$ 783
Accumulated Amortization	782	655
Amortized intangible assets, Net	$ 1	$ 128