Leases Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019	Feb. 29, 2020
Leases [Abstract]
Operating lease cost	$ 3,698	$ 4,648	$ 8,168	$ 8,914
Operating cash flows from operating leases included in lease liabilities	2,216	2,131	4,335	4,406
ROU assets obtained in exchange for new operating lease liabilities	$ 1,324	$ 643	$ 1,528	$ 3,149
Weighted-average remaining lease term - operating leases	7 years 2 months 23 days		7 years 2 months 23 days		7 years 11 months 8 days
Weighted-average discount rate - operating leases	4.83%		4.83%		4.89%