Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$ (413,000)	$ (378,000)	$ 491,000
Current State and Local Tax Expense (Benefit)	331,000	32,000	133,000
Current	(82,000)	(346,000)	624,000
Deferred Federal Income Tax Expense (Benefit)	(5,368,000)	285,000	728,000
Deferred State and Local Income Tax Expense (Benefit)	(32,000)	75,000	148,000
Deferred	(5,400,000)	360,000	876,000
Income tax expense	(5,482,000)	14,000	1,500,000
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Provision at U.S. statutory rate	1,374,000	(104,000)	1,264,000
State taxes, net of federal benefit	189,000	49,000	182,000
Effect of tax rate change on deferred tax assets and liabilities	(6,923,000)	0	0
Permanent differences, primarily meals and entertainment	180,000	264,000	250,000
Stock-based compensation	(11,000)	(41,000)	0
Domestic production activities deduction	0	(20,000)	(63,000)
Tax credits	(291,000)	(134,000)	$ (133,000)
Deferred Tax Assets, Gross [Abstract]
Net operating losses and tax credit carryforwards	982,000	496,000
Accrued salaries and severance	1,127,000	1,207,000
Other	1,497,000	1,615,000
Deferred tax assets, Gross	3,606,000	3,318,000
Deferred Tax Liabilities, Gross [Abstract]
Property, equipment and leasehold improvements	(12,287,000)	(15,194,000)
Intangible assets	(4,054,000)	(6,112,000)
Other	(151,000)	(193,000)
Deferred tax liabilities, Gross	(16,492,000)	(21,499,000)
Deferred tax assets (liabilities), Net	(12,886,000)	(18,181,000)
Net Operating Loss And Alternative Minimum Tax Credit Carry Forwards [Abstract]
State NOLs, tax effected	26,000
Federal NOLs, tax effected	208,000
Federal employer FICA tips credit	748,000
Federal alternative minimum tax carryforwards	340,000
Unrecognized tax benefits	0	$ 0
Changes to our unrecognized tax benefits within the next twelve months.	$ 0