Leases - Components of Lease Expense (Detail) $ in Thousands	3 Months Ended
	May 31, 2019 USD ($)
Lease Cost [Abstract]
Operating lease cost	$ 1,577
Supplemental cash flow information related to leases was as follows:
Cash paid for amounts included in the measurement of lease liabilities, Operating cash flows from operating leases	$ 1,569
Weighted Average Remaining Lease Terms, Operating leases	5 years
Weighted Average Discount Rate, Operating leases	4.50%