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Goodwill and Intangible Assets - Goodwill and Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 11,233 | $ 11,171
Accumulated Amortization | 9,473 | 8,917
Net Carrying Value | 1,760 | 2,254
Subscriber relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 8,034 | 7,977
Accumulated Amortization | 6,354 | 5,958
Net Carrying Value | 1,680 | 2,019
Distribution rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 316 | 311
Accumulated Amortization | 236 | 76
Net Carrying Value | 80 | 235
Internally developed software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 446 | 446
Accumulated Amortization | 446 | 446
Net Carrying Value | 0 | 0
Proprietary content |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 153 | 153
Accumulated Amortization | 153 | 153
Net Carrying Value | 0 | 0
Intellectual property |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 2,284 | 2,284
Accumulated Amortization | 2,284 | 2,284
Net Carrying Value | $ 0 | $ 0

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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