Annual report pursuant to Section 13 and 15(d)

Revenue from Contracts with Customers (Costs to Obtain a Contract with a Customer) (Details)

v3.20.1
Revenue from Contracts with Customers (Costs to Obtain a Contract with a Customer) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenue from Contract with Customer [Abstract]      
Contract acquisition costs, net $ 87,942 $ 80,726  
Increase in contract acquisition costs 7,216    
Amortization of contract acquisition costs $ 11,759 $ 9,671 $ 0