Marketable Securities (Details) (Corporate Bonds [Member], USD $)	Mar. 31, 2013	Dec. 31, 2012
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	$ 260,000	$ 257,000
Fair Value	261,000	251,000
Unrealized Holding Loss	$ 1,000	$ (6,000)

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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+ Details

- Definition

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

+ References+ Details