XML 56 R42.htm IDEA: XBRL DOCUMENT v3.10.0.1
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Jan. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 2 years  
Contract with Customer, Asset, Gross   $ 818,371
Contract with Customer, Liability $ 19,566 $ 20,737
Contract with Customer, Liability, Revenue Recognized 20,500  
Revenue, Remaining Performance Obligation, Amount $ 34,000  
Minimum    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
License Agreement, Term of Agreement 1 year  
Long-Duration Contracts, Assumptions by Product and Guarantee, Discount Rate 3.00%  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year  
Maximum    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
License Agreement, Term of Agreement 7 years  
Long-Duration Contracts, Assumptions by Product and Guarantee, Discount Rate 6.00%  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 3 years