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Investments: (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 29, 2012	Sep. 29, 2012	Sep. 28, 2013	Dec. 29, 2012
Summary of marketable securities classified as available-for-sale securities
Equity securities, Cost			$ 417,000	$ 92,400
Equity securities, Fair Value			401,000	85,900
Unrealized gains and losses for marketable securities classified as available-for-sale securities in accumulated other comprehensive loss
Unrealized gains			300
Unrealized losses			(16,300)	(6,500)
Net unrealized losses			(16,000)	(6,500)
Realized gains and losses recognized on sales of available-for-sale marketable securities
Realized gains	4,600	46,900
Realized losses		(12,300)
Net realized gains/(losses)	$ 4,600	$ 34,600

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- Definition

This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Equity securities categorized neither as held-to-maturity nor trading which are intended be sold within one year from the balance sheet date or the normal operating cycle, whichever is longer.

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