Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current federal	$ (1,052)	$ 1,222	$ (413)
Current state	(273)	571	331
Current	(1,325)	1,793	(82)
Deferred federal	(4,500)	(135)	(5,368)
Deferred state	(874)	(371)	(32)
Deferred	(5,374)	(506)	(5,400)
Income tax expense	(6,699)	1,287	(5,482)
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Provision at U.S. statutory rate	(4,120)	1,140	1,374
State taxes, net of federal benefit	(1,023)	210	189
Effect of tax rate change on deferred tax assets and liabilities	0	0	(6,923)
Permanent differences, primarily meals and entertainment	155	111	180
Stock-based compensation	(3)	(42)	(11)
Other adjustments	(149)	0	0
Tax credits	(1,833)	(132)	(291)
Unrecognized tax benefits	274	0	$ 0
Deferred Tax Assets, Gross [Abstract]
Net operating losses and tax credit carryforwards	5,565	11
Accrued salaries and severance	1,060	1,089
Right-of-use liability	5,030
Other	3,529	1,403
Deferred tax assets, Gross	15,184	2,503
Deferred Tax Liabilities, Gross [Abstract]
Property, equipment and leasehold improvements	(12,222)	(10,783)
Intangible assets	(4,594)	(3,977)
Right-of-use asset	(5,144)
Other	(190)	(124)
Deferred tax liabilities, Gross	(22,150)	(14,884)
Deferred tax assets (liabilities), Net	(6,966)	$ (12,381)
Federal alternative minimum tax carryforwards	120
Unrecognized tax benefits that, if recognized, would affect effective tax rate	300
Unrecognized tax benefits that, if recognized, would result in adjustments to other tax accounts, primarily deferred taxes	$ 300
Period over which AMT credit carryforward is refundable	4 years