Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)

v3.10.0.1
Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Deferred tax assets:      
Net operating loss carryforward $ 164,363 $ 120,626 $ 162,073
Oil and gas property basis difference 3,595 151,260 386,302
Investment in pass through entities 8,620 12,343 27,469
Stock-based compensation expense 616 813 2,084
Business energy investment tax credit 369 369 369
AMT credit 0 0 3,842
Charitable contributions carryover 269 255 303
Change in fair value of derivative instruments 2,761 0 48,317
Foreign tax credit carryforwards 2,009 2,074 2,074
Accrued liabilities 834 285 397
ARO liability 16,923 15,897 12,107
Non-oil and gas property basis difference 104 171 0
State net operating loss carryover 11,526 6,954 5,351
Total deferred tax assets 211,989 311,047 650,688
Valuation allowance for deferred tax assets (211,987) (298,830) (645,841)
Deferred tax assets, net of valuation allowance 2 12,217 4,847
Deferred tax liabilities:      
Non-oil and gas property basis difference 0 0 155
Change in fair value of derivative instruments 2 11,009 0
Total deferred tax liabilities 2 11,009 155
Net deferred tax asset $ 0 $ 1,208 $ 4,692