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Goodwill and Amortizable Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	May 22, 2019
Finite-Lived Intangible Assets [Line Items]
Net carrying amount	$ 324,976		$ 333,075
Amortization expense	20,200	$ 7,000
Capitalized technology
Finite-Lived Intangible Assets [Line Items]
Net carrying amount	98,938		101,606
Trade names and domain names
Finite-Lived Intangible Assets [Line Items]
Net carrying amount	18,520		20,522
Trilogy Education Services, Inc. \| Developed technology
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets:				$ 48,100
Trilogy Education Services, Inc. \| Developed content
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets:				48,100
Trilogy Education Services, Inc. \| University client relationships
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets:				84,200
Trilogy Education Services, Inc. \| Trade names and domain names
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets:				$ 7,100
Alternative Credit Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill, accumulated impairment loss	$ 70,400		$ 70,400