Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax liabilities:
Property and equipment	$ 7,093	$ 7,727
Intangible assets	21,668	18,134
Prepaid expenses	374	621
Total deferred tax liabilities	29,135	26,482
Deferred tax assets:
Allowance for doubtful accounts	226	158
Compensation	2,210	3,264
Other accrued liabilities	118	119
Deferred Tax Assets, Gross, Total	2,554	3,541
Less: valuation allowance	0	0
Total net deferred tax asset	2,554	3,541
Net deferred tax liabilities	26,581	22,941
Current portion of deferred tax assets	1,107	845
Non-current portion of deferred tax liabilities	(27,688)	(23,786)
Net deferred tax liabilities	$ (26,581)	$ (22,941)