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Income Taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Deferred tax liabilities: |  |
Property and equipment | $ 6,858 | $ 7,093
Intangible assets | 24,987 | 21,668
Prepaid expenses | 619 | 374
Total deferred tax liabilities | 32,464 | 29,135
Deferred tax assets: |  |
Allowance for doubtful accounts | 224 | 226
Compensation | 2,421 | 2,210
Other accrued liabilities | 78 | 118
Deferred Tax Assets, Gross, Total | 2,723 | 2,554
Less: valuation allowance | 0 | 0
Total net deferred tax assets | 2,723 | 2,554
Net deferred tax liabilities | 29,741 | 26,581
Current portion of deferred tax assets | 1,022 | 1,107
Non-current portion of deferred tax liabilities | (30,763) | (27,688)
Net deferred tax liabilities | $ (29,741) | $ (26,581)

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