Segment Reporting - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020 Segment
Segment Reporting Information [Line Items]
Number of reporting segments	2
CTU [Member]
Segment Reporting Information [Line Items]
Students enrolled expressed as percentage of enrollment	60.00%
CTU [Member] | Fully Online [Member]
Segment Reporting Information [Line Items]
Percentage of enrollment	94.00%
AIU [Member]
Segment Reporting Information [Line Items]
Students enrolled expressed as percentage of enrollment	40.00%
Acquisition date	Mar. 02, 2020
AIU [Member] | Fully Online [Member]
Segment Reporting Information [Line Items]
Percentage of enrollment	96.00%