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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Finite Lived Intangible Assets [Line Items] |  |
Weighted-average amortization period | 58 months | 61 months
Accumulated Amortization | $ (34,664) | $ (27,182)
Net Carrying Amount | 31,067 |
Indefinite-lived trade name | 3,600 | 3,600
Foreign currency translation adjustment | (398) | (271)
Total intangible assets, gross carrying amount | 69,331 | 53,097
Intangible assets, net | $ 34,667 | $ 25,915
Developed technologies and content library |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted-average amortization period | 66 months | 71 months
Gross Carrying Amount | $ 43,268 | $ 31,667
Accumulated Amortization | (18,395) | (13,737)
Net Carrying Amount | $ 24,873 | $ 17,930
Customer lists |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted-average amortization period | 47 months | 47 months
Gross Carrying Amount | $ 9,970 | $ 9,970
Accumulated Amortization | (8,210) | (6,847)
Net Carrying Amount | $ 1,760 | $ 3,123
Trade and domain names |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted-average amortization period | 46 months | 44 months
Gross Carrying Amount | $ 10,873 | $ 6,113
Accumulated Amortization | (6,169) | (4,863)
Net Carrying Amount | $ 4,704 | $ 1,250
Non-compete agreements |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted-average amortization period | 31 months | 31 months
Gross Carrying Amount | $ 2,018 | $ 2,018
Accumulated Amortization | (1,890) | (1,735)
Net Carrying Amount | 128 | $ 283
Internships Dot Com |  |
Finite Lived Intangible Assets [Line Items] |  |
Indefinite-lived trade name | $ 3,600 |

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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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