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Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Deferred income tax asset (liability): |  |
Accrued compensation | $ 4,098 | $ 2,374
Unfavorable contracts liability | 4,739 | 10,794
Other | 2,725 | 3,758
Total deferred tax assets | 11,562 | 16,926
Depreciation | (4,629) | (4,667)
Intangibles | (183,632) | (156,968)
Other | (1,217) | (1,773)
Total deferred tax liabilities | (189,478) | (163,408)
Net deferred tax liability | $ (177,916) | $ (146,482)

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