Restructuring and Related Charges - Restructuring liability (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Liability Rollforward
Beginning balance	$ 3,122	$ 8,283	$ 14,347
Restructuring and other charges	4,618	11,967	3,920
Payments	(6,128)	(17,128)	(9,984)
Adjustments	0	0	0
Ending balance	1,612	3,122	8,283
Severance And Other Employee Separation Costs \| CEC Integration Plan
Restructuring Liability Rollforward
Beginning balance	1,835	8,283	14,347
Restructuring and other charges	0	0	3,920
Payments	(1,835)	(6,448)	(9,984)
Adjustments	0	0	0
Ending balance	0	1,835	8,283
Severance And Other Employee Separation Costs \| 2020 Restructuring Plan
Restructuring Liability Rollforward
Beginning balance	1,287	0	0
Restructuring and other charges	4,618	11,967	0
Payments	(4,293)	(10,680)	0
Adjustments	0	0	0
Ending balance	$ 1,612	$ 1,287	$ 0

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

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-Publisher FASB
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-Section 45
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-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
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- Definition

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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