Identifiable Intangible Assets - Schedule of Amortization Expense Associated with Identifiable Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2019	May 31, 2018
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 10,405	$ 10,254
Cost of revenue
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	6,660	6,485
Sales and marketing
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	1,194	1,362
Research and development
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	34	34
General and administrative
Finite-Lived Intangible Assets [Line Items]
Total amortization expense	$ 2,517	$ 2,373