New Accounting Pronouncements - Adopted (Details) - USD ($) $ in Thousands	Aug. 31, 2019	Mar. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 34,429
Initial recognition of lease liabilities	$ (45,625)	$ (47,223)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		37,100
Initial recognition of lease liabilities		$ (47,200)