Leases Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018	Feb. 28, 2019
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	8 years 8 months 12 days		8 years 8 months 12 days		9 years 2 months 23 days
Operating Lease, Cost	$ 4,648	$ 4,042	$ 8,914	$ 7,972
Operating Lease, Payments	2,131	1,943	4,406	3,853
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 643	$ 120	$ 3,149	$ 4,166
Operating Lease, Weighted Average Discount Rate, Percent	5.10%		5.10%		5.13%