CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND RETAINED EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND RETAINED EARNINGS
Net sales	$ 36,165	$ 34,366	$ 101,715	$ 98,557
Costs and expenses:
Cost of sales (exclusive of depreciation, depletion and amortization)	29,257	29,895	82,620	83,813
Depreciation, depletion and amortization	640	764	1,937	2,245
Selling and administrative	5,464	4,567	16,001	14,011
Charges related to cessation of mining an aggregate deposit		5,657		5,657
Gain on disposition of property and equipment	161		220	1
Total costs and expenses	35,200	40,883	100,338	105,725
Operating income (loss)	965	(6,517)	1,377	(7,168)
Interest expense, net	(102)	(94)	(299)	(303)
Other income (expense), net	43	(15)	70	(15)
Income (loss) before income taxes	906	(6,626)	1,148	(7,486)
Provision (benefit) from income taxes	344	(2,533)	436	(2,825)
Net income (loss)	562	(4,093)	712	(4,661)
Retained earnings, beginning of period	60,220	64,961	60,070	65,529
Retained earnings, end of period	$ 60,782	$ 60,868	$ 60,782	$ 60,868
Basic and diluted income (loss) per share (in dollars per share)	$ 0.34	$ (2.48)	$ 0.43	$ (2.83)
Average shares outstanding (in shares)	1,662	1,650	1,661	1,648

Represents the charges incurred on ceasing of mining operation

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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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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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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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