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Income Taxes - Provision (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Current tax provision (benefit): |  |  |  |  |
Federal | $ (21,598) | $ 5,853 |  | $ (3,801) |
State | 1,465 | 180 |  | 111 |
Foreign | 1,575 |  |  |  |
Total current tax provision (benefit) | (18,558) | 6,033 |  | (3,690) |
Deferred tax provision (benefit): |  |  |  |  |
Federal | 92,250 | (166,890) |  | (77,430) |
State | 12,250 | 20,133 |  | (6,106) |
Total deferred tax provision (benefit) | 104,500 | (146,757) |  | (83,536) |
Provision (benefit) for income taxes | $ 85,942 | $ (140,724) | [1] | $ (87,226) | [1]
[1] | Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 1 to the financial statements of this report for additional information.

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