Accrued Restructuring Expense - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Aug. 31, 2019	Aug. 31, 2019	Feb. 28, 2019
Restructuring And Related Activities [Abstract]
Restructuring Charges	$ 0		$ 4,588
Restructuring liability, included Accrued expenses and other current liabilities	2,443	$ 2,443	$ 3,883
Additional accruals settled	$ 497	$ 1,440

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration