Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 01, 2017	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016
Income Statement [Abstract]
Operating revenues	$ 15,966	$ 13,842	$ 28,440	$ 28,654
Operating costs	13,453	11,989	24,196	25,128
Gross profit	2,513	1,853	4,244	3,526
Selling, general and administrative expenses	3,057	3,313	6,462	6,703
Operating loss	(544)	(1,460)	(2,218)	(3,177)
Other income:
Other income, net	52	1	55	7
Interest expense, net	(11)	(49)	(76)	(85)
Loss from operations before income taxes	(503)	(1,508)	(2,239)	(3,255)
Provision (benefit) for federal and state income taxes	392	95	(467)	(903)
Net loss	$ (895)	$ (1,603)	$ (1,772)	$ (2,352)
Basic and diluted loss per common share:	$ (0.03)	$ (0.06)	$ (0.07)	$ (0.08)
Basic and diluted weighted average shares used in computing earnings (loss) per share:	27,135,000	27,831,000	27,162,000	27,884,000

The aggregate direct operating costs incurred during the reporting period.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The net amount of operating interest income (expense).

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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