Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.8.0.1
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Effective income tax rate (1959.30%) 55.70%  
Tax Cuts And Jobs Act Of 2017, provisional income tax benefit     $ 64,343
Tax Cuts And Jobs Act Of 2017, repatriation of non-US earnings     43,000
Tax Cuts And Jobs Act Of 2017, benefit from undistributed foreign earnings     $ 25,196