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Investments: (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 25, 2011	Dec. 31, 2011
Summary of marketable securities classified as available-for-sale securities
Equity securities, Cost	$ 113,000		$ 1,015,800
Equity securities, Fair Value	116,600		1,043,800
Unrealized gains and losses for marketable securities classified as available-for-sale securities in accumulated other comprehensive income
Unrealized gains	3,600		32,900
Unrealized losses			(4,900)
Net unrealized gains	3,600		28,000
Realized gains and losses recognized on sales of available-for-sale marketable securities
Realized gains	42,300
Realized losses	(12,300)	(600)
Net realized gains	$ 30,000	$ (600)

X

- 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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