Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Detail)

v3.5.0.2
Income Taxes (Narrative) (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Current Income Tax Expense (Benefit)   $ 0
Angola [Member]    
Current Income Tax Expense (Benefit) $ 100 $ 3,100