v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Taxes        
Income tax benefit $ (3,565)   $ (4,793)  
Tax benefit related to intangible assets and others $ (600)   $ (1,800)  
U.S. statutory federal income tax rate (as a percent) 16.00% 0.00% 13.00% 0.00%