Annual report pursuant to Section 13 and 15(d)

Income Tax - Income tax expense (Details)

v3.8.0.1
Income Tax - Income tax expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income tax expense      
Current income tax expense $ 26,261 $ 6,787 $ 115
Deferred income tax expense (benefit)   (368) 368
Total income tax expense $ 26,261 $ 6,419 $ 483