Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of income tax expense computed by applying our Bermuda statutory rate and reported income tax expense (Details 2)

v3.8.0.1
Income Taxes - Reconciliation of income tax expense computed by applying our Bermuda statutory rate and reported income tax expense (Details 2) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]      
Tax at Bermuda statutory rate 0.00% 0.00% 0.00%
Foreign income taxes at different rates $ (28,188) $ (10,721) $ (7,864)
Tax contingencies 11,184 (533) (283)
Return to provision adjustments (1,397) 418 1,370
Benefit from change in tax rate 7,659 24 5
Valuation allowance   3,594  
Income tax expense $ (10,742) $ (7,218) $ (6,772)