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Leases - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, impairment charges | $ 3,600 | $ 20,700 | $ 5,700
Impairment charges | $ 3,611 | 24,911 | 5,670
Marketing Services |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, impairment charges |  |  | 5,200
Impairment charges |  | 22,000 |
SaaS |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, impairment charges |  |  | $ 500
Impairment charges |  | 2,900 |
Leasehold Improvements, Furniture, and Fixtures |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Impairment charges |  | $ 4,200 |
Minimum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, remaining lease term | 1 year |  |
Maximum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease, remaining lease term | 4 years |  |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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- Definition 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. + References No definition available. + Details
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- Definition Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123399704&loc=SL77918431-209957 + Details
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