Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Income Tax Expense (Benefit) (Details)

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Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current expense (benefit):                      
Federal                 $ 0 $ 21 $ 11
State                 111 12 7
Foreign                 261    
Total Current Income Tax Benefit                 372 33 18
Deferred expense (benefit):                      
Federal                 44,075 10,534 (167,413)
State                 228 (240) (24,720)
Foreign                 0 0 0
Income tax expense from continuing operations $ 37,674 $ 3,645 $ 2,242 $ 1,114 $ 10,354 $ 160 $ (3,881) $ 3,694 $ 44,675 $ 10,327 $ (192,115)