Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.19.1
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Jan. 01, 2019
Dec. 31, 2018
Schedule Of Significant Accounting Policies [Line Items]        
Property, equipment, and software, net $ 153,956     $ 153,528
Bad debt expense 1,100 $ 600    
Right-of-use assets 33,806      
Present value of lease payments 39,775      
Right-of-use assets 57,217      
Present value of lease payments $ 79,627      
Length of Expected Customer Benefit of License Fees Billed at Initial Order Date        
Schedule Of Significant Accounting Policies [Line Items]        
Expected length of time of benefit from license fees 3 years      
United States        
Schedule Of Significant Accounting Policies [Line Items]        
Property, equipment, and software, net $ 144,700     144,300
International Subsidiaries        
Schedule Of Significant Accounting Policies [Line Items]        
Property, equipment, and software, net 9,300     $ 9,200
Accounting Standards Update 2016-02        
Schedule Of Significant Accounting Policies [Line Items]        
Right-of-use assets (36,400)   $ 73,900  
Present value of lease payments (58,600)   $ 101,500  
Right-of-use assets 58,200      
Present value of lease payments $ 80,400