v3.20.2
Segment and Geographic Information - Revenue and Total Assets by Segment (Details) - USD ($)
 3 Months Ended 9 Months Ended
Apr. 23, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Segment Information                    
Revenue   $ 201,073,000     $ 153,798,000     $ 559,239,000 $ 411,493,000  
Total segment profitability   $ 3,712,000     $ (10,723,000)     $ (2,679,000) $ (28,904,000)  
Total segment profitability margin   1.80%     (7.00%)     (0.50%) (7.00%)  
Net loss   $ (52,554,000) $ (66,167,000) $ (60,106,000) $ (141,112,000) $ (27,972,000) $ (21,554,000) $ (178,827,000) $ (190,638,000)  
Adjustments                    
Stock-based compensation expense   22,001,000     16,535,000     63,962,000 36,086,000  
Foreign currency (gain) loss   (42,000)     710,000     1,659,000 1,093,000  
Net interest expense   6,851,000     4,727,000     18,195,000 3,043,000  
Income tax (benefit) expense   (162,000)     714,000     (1,580,000) (18,918,000)  
Depreciation and amortization expense   23,936,000     22,288,000     71,406,000 46,639,000  
Loss on debt extinguishment $ 11,700,000 0     0     11,671,000 0  
Impairment charge   0     70,379,000     0 70,379,000  
Other   3,682,000     15,036,000     10,835,000 23,412,000  
Total adjustments   56,266,000     130,389,000     176,148,000 161,734,000  
Total segment profitability   3,712,000     (10,723,000)     (2,679,000) (28,904,000)  
Transaction and integration costs   400,000     2,500,000     1,500,000 7,000,000.0  
Restructuring-related costs   2,700,000     6,600,000     3,200,000 7,200,000  
Stockholder activism costs               5,600,000    
Litigation-related costs   600,000           600,000    
Deferred revenue fair value adjustment         5,900,000       9,300,000  
Total assets   1,552,778,000           1,552,778,000   $ 1,186,830,000
Trade accounts receivable                    
Provision for credit losses   (3,640,000)           (3,640,000)   (1,330,000)
Total trade accounts receivable   95,712,000           95,712,000   33,655,000
Contract liabilities   91,783,000           91,783,000   48,833,000
Graduate Program Segment                    
Segment Information                    
Revenue   122,036,000     103,393,000     356,178,000 308,970,000  
Total segment profitability   $ 9,713,000     $ 1,213,000     $ 20,876,000 $ (6,126,000)  
Total segment profitability margin   8.00%     1.20%     5.90% (2.00%)  
Adjustments                    
Total segment profitability   $ 9,713,000     $ 1,213,000     $ 20,876,000 $ (6,126,000)  
Total assets   852,350,000           852,350,000   507,187,000
Trade accounts receivable                    
Accounts receivable, net   27,118,000           27,118,000   3,454,000
Graduate Program Segment unbilled revenue   35,199,000           35,199,000   12,123,000
Contract liabilities   7,851,000           7,851,000   2,210,000
Contract with customer, liability, revenue recognized   0     0     2,200,000 2,400,000  
Alternative Credential Segment                    
Segment Information                    
Revenue   79,037,000     50,405,000     203,061,000 102,523,000  
Total segment profitability   $ (6,001,000)     $ (11,936,000)     $ (23,555,000) $ (22,778,000)  
Total segment profitability margin   (7.60%)     (23.70%)     (11.60%) (22.20%)  
Adjustments                    
Total segment profitability   $ (6,001,000)     $ (11,936,000)     $ (23,555,000) $ (22,778,000)  
Total assets   700,428,000           700,428,000   679,643,000
Trade accounts receivable                    
Accounts receivable, net   37,035,000           37,035,000   19,408,000
Contract liabilities   83,932,000           83,932,000   $ 46,623,000
Contract with customer, liability, revenue recognized   $ 0     $ 0     $ 46,600,000 $ 5,400,000