Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax liabilities:
Property and equipment	$ 5,181	$ 5,145
Intangible assets	20,765	19,324
Prepaid expenses	376	350
Total deferred tax liabilities	26,322	24,819
Deferred tax assets:
Allowance for doubtful accounts	64	118
Compensation	1,011	906
Other accrued liabilities	95	63
Deferred Tax Assets, Gross, Total	1,170	1,087
Less: valuation allowance	0	0
Total net deferred tax assets	1,170	1,087
Net deferred tax liabilities	25,152	23,732
Current portion of deferred tax assets	388	303
Non-current portion of deferred tax liabilities	(25,540)	(24,035)
Net deferred tax liabilities	$ (25,152)	$ (23,732)