XML 71 R59.htm IDEA: XBRL DOCUMENT v3.19.2
Segment Reporting - Additional Information (Detail)
6 Months Ended
Jun. 30, 2019
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 67.00%
CTU [Member] | Fully Online [Member]  
Segment Reporting Information [Line Items]  
Percentage of enrollment 93.00%
AIU [Member]  
Segment Reporting Information [Line Items]  
Students enrolled expressed as percentage of enrollment 33.00%
AIU [Member] | Fully Online [Member]  
Segment Reporting Information [Line Items]  
Percentage of enrollment 94.00%