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Organization and Summary of Significant Accounting Policies - Marketable Securities (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Available-for-sale Securities, Amortized Cost Basis		$ 2,500,000
Marketable Securities, Noncurrent	0	2,798,000
Available-for-sale Securities, Gross Unrealized Gains		$ 295,000

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.

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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