XML 113 R64.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Business Combinations - Intangible Assets Acquired (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 01, 2018
Dec. 31, 2019
Business Acquisition [Line Items]    
Weighted average useful life   3 years
Student relationships    
Business Acquisition [Line Items]    
Weighted average useful life 3 years  
Capella Merger    
Business Acquisition [Line Items]    
Total intangible assets $ 349,800  
Capella Merger | Student relationships    
Business Acquisition [Line Items]    
Student relationships $ 166,000  
Weighted average useful life 3 years  
Capella Merger | Trade names    
Business Acquisition [Line Items]    
Trade names $ 183,800