Restructuring Charges - Schedule of Restructuring Charges by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Degree Program Segment deferred revenue
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 10,252	$ 10,941
Degree Program Segment deferred revenue | 2022 Strategic Realignment Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	9,326	9,326
Degree Program Segment deferred revenue | Severance and severance-related costs | 2022 Strategic Realignment Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	8,772	8,772
Degree Program Segment deferred revenue | Professional and other fees relating to restructuring activities | 2022 Strategic Realignment Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	554	554
Degree Program Segment deferred revenue | Other restructuring charges*
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	926	1,615
Alternative Credential Segment accounts receivable
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	6,501	6,599
Alternative Credential Segment accounts receivable | 2022 Strategic Realignment Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	6,431	6,431
Alternative Credential Segment accounts receivable | Severance and severance-related costs | 2022 Strategic Realignment Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	6,431	6,431
Alternative Credential Segment accounts receivable | Professional and other fees relating to restructuring activities | 2022 Strategic Realignment Plan
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0
Alternative Credential Segment accounts receivable | Other restructuring charges*
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 70	$ 168