Quarterly report pursuant to Section 13 or 15(d)

Other Assets (Details)

v3.19.2
Other Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Other Assets [Line Items]          
Accumulated amortization of costs to obtain contracts $ (30,511)   $ (30,511)   $ (24,992)
Unbilled receivables 100,594   100,594   81,703
Operating lease right-of-use assets 35,940   35,940   20,257
Other assets 25,981   25,981   39,410
Other assets, total 380,919   380,919   335,685
Amortization cost 2,900 $ 2,100 5,500 $ 4,000  
Customer agreements          
Other Assets [Line Items]          
Costs to obtain contracts- customer agreements 246,434   246,434   219,307
Incentives          
Other Assets [Line Items]          
Costs to obtain contracts- customer agreements $ 2,481   $ 2,481   $ 0