Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	8 years 9 months 18 days	8 years 8 months 12 days
Gross Carrying Amount	$ 61,947	$ 55,611
Accumulated Amortization	23,311	18,638
Amortized intangible assets, Net	$ 38,636	$ 36,973
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	8 years	0 years
Gross Carrying Amount	$ 3,642	$ 1,234
Accumulated Amortization	1,234	$ 1,234
Amortized intangible assets, Net	$ 2,408
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	8 years 10 months 24 days	8 years 8 months 12 days
Gross Carrying Amount	$ 57,347	$ 53,519
Accumulated Amortization	21,336	16,852
Amortized intangible assets, Net	$ 36,011	$ 36,667
Noncompete [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	9 months 18 days	1 year 9 months 18 days
Gross Carrying Amount	$ 175	$ 75
Accumulated Amortization	86	29
Amortized intangible assets, Net	$ 89	$ 46
Patent [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	1 year	2 years
Gross Carrying Amount	$ 783	$ 783
Accumulated Amortization	655	523
Amortized intangible assets, Net	$ 128	$ 260