XML 51 R39.htm IDEA: XBRL DOCUMENT v3.19.3
Summary of Significant Accounting Policies - Additional Information (Details)
$ in Thousands
 6 Months Ended 9 Months Ended
Jun. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
Institution
Sep. 30, 2018
USD ($)
Sep. 30, 2019
Sep. 30, 2019
USD ($)
Jan. 22, 2019
USD ($)
Jan. 01, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Summary Of Significant Accounting Policies [Line Items]                  
Costs capitalized to obtain or fulfill contracts with customers         $ 0        
Unbilled revenue         5,059        
Reduction in revenue due to scholarships offered to students $ 101,176                
Other assets         1,742     $ 478  
Amounts written off   $ 0 $ 8,483            
Allowance for doubtful accounts         0       $ 5,907
Number of university partners   21   21          
Cumulative effect from the adoption of accounting pronouncements, net of taxes     (1,174)            
Right-of-use assets         27,730   $ 498    
Lease liabilities         28,149   $ 498    
Right-of-use assets           $ 13,069      
Lease liability           $ 13,069      
Election of hindsight practical expedient   true              
Election of package of practical expedients   true              
Cumulative effect from the adoption of accounting pronouncements, net of taxes     1,174            
Computer Software, Intangible Asset [Member]                  
Summary Of Significant Accounting Policies [Line Items]                  
Estimated Average Useful Life   3 years              
Capitalized Content Development                  
Summary Of Significant Accounting Policies [Line Items]                  
Other assets         1,094        
Estimated Average Useful Life   4 years              
Interest Rate Corridor [Member]                  
Summary Of Significant Accounting Policies [Line Items]                  
Notional amount of derivative instrument         55,000        
Interest Rate Corridor [Member] | 30 Day LIBOR equal to 1.5% through 3.0%                  
Summary Of Significant Accounting Policies [Line Items]                  
Interest rate spread on 30 Day LIBOR       1.50%          
Interest Rate Corridor [Member] | 30 Day LIBOR exceeds 3.0%                  
Summary Of Significant Accounting Policies [Line Items]                  
Interest rate spread on 30 Day LIBOR       1.50%          
Cash Flow Hedging [Member]                  
Summary Of Significant Accounting Policies [Line Items]                  
Effective portion of gain (loss) on derivatives included as a component of other comprehensive income   $ (418)              
Effective portion of gain (loss) on derivatives included as a component of other comprehensive income     $ 329            
Other Assets [Member]                  
Summary Of Significant Accounting Policies [Line Items]                  
Fair values of interest rate corridor instrument         $ 79     $ 600  
Minimum [Member]                  
Summary Of Significant Accounting Policies [Line Items]                  
Number of days from the date of receipt in which funds remain as restricted cash and cash equivalents   60 days              
Initial contract terms   7 years              
Minimum [Member] | Interest Rate Corridor [Member] | 30 Day LIBOR equal to 1.5% through 3.0%                  
Summary Of Significant Accounting Policies [Line Items]                  
30 Day LIBOR index rate       1.50%          
Minimum [Member] | Interest Rate Corridor [Member] | 30 Day LIBOR exceeds 3.0%                  
Summary Of Significant Accounting Policies [Line Items]                  
30 Day LIBOR index rate       3.00%          
Maximum [Member]                  
Summary Of Significant Accounting Policies [Line Items]                  
Number of days from the date of receipt in which funds remain as restricted cash and cash equivalents   90 days              
Initial contract terms   15 years              
Maximum [Member] | Interest Rate Corridor [Member] | LIBOR [Member]                  
Summary Of Significant Accounting Policies [Line Items]                  
30 Day LIBOR index rate       1.50%          
Maximum [Member] | Interest Rate Corridor [Member] | 30 Day LIBOR equal to 1.5% through 3.0%                  
Summary Of Significant Accounting Policies [Line Items]                  
30 Day LIBOR index rate       3.00%