Annual report pursuant to Section 13 and 15(d)

Income Taxes (Statutory Rate Reconciliation) (Details)

v3.8.0.1
Income Taxes (Statutory Rate Reconciliation) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statutory rate reconciliation      
Tax provision computed at U.S. statutory rate $ 7,228 $ (3,156) $ (37,089)
Foreign taxes not offset in U.S. by foreign tax credits 6,775 6,319 (394)
Impact of Tax Reform Act 52,449    
Effect of change in foreign statutory rates   2,394 3,014
Permanent differences 309 4,505 1,803
Foreign tax credit adjustments 2,394    
Increase/(decrease) in valuation allowance (58,777) (802) 47,253
Other   (12)  
Total income tax expense $ 10,378 $ 9,248 $ 14,587