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Restructuring Charges - Changes to accrued liability balance (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Changes to accrued liability balance related to restructuring
Balance at beginning of period	$ 0
Charges incurred	8,450
Non-cash expense	(1,660)
Payments	(6,589)
Balance at end of period	201
Organizational Restructuring
Restructuring charges
Estimated additional charges	0
Changes to accrued liability balance related to restructuring
Balance at beginning of period	0
Charges incurred	1,695
Non-cash expense	(61)
Payments	(1,634)
Pandemic Restructuring
Changes to accrued liability balance related to restructuring
Balance at beginning of period	0
Charges incurred	5,257
Non-cash expense	(101)
Payments	(4,955)
Balance at end of period	201
Property Restructuring
Changes to accrued liability balance related to restructuring
Balance at beginning of period	0
Charges incurred	1,498
Non-cash expense	(1,498)
Loss on sale	915
Impairment loss	$ 583

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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