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Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Lessee, Lease, Description [Line Items]
Noncash Impairment, Leases	$ 757			$ 110			$ 50,979	$ 4,880
Decrease in Operating Lease Right of Use Asset							50,979
Sublease Income	1,518			397			2,288	1,106
Lease termination fees	166			745			3,270	882
Restructuring and impairment	$ 7,066	$ 50,724	$ 67,895	$ 3,192	$ 15,846	$ 7,754	$ 125,685	$ 26,792

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Noncash Impairment, Leases

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Amount of gain (loss) on termination of lease before expiration of lease term.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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.

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Amount of sublease income excluding finance and operating lease expense.

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