Goodwill and Intangible Assets - Schedule of Identified Intangible Assets with Definite Life (Details) - RU Segment	9 Months Ended
Sep. 30, 2021
Curricula
Business Acquisition [Line Items]
Useful Life	3 years
Lead conversions
Business Acquisition [Line Items]
Useful Life	2 years
Student Roster
Business Acquisition [Line Items]
Useful Life	2 years

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.

No definition available.

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration