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Marketable Securities Marketable Securities, Maturities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 3,198
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	3,200
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	20,711
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	20,737
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	1,581
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	1,589
Available-for-sale Securities, Amortized Cost Basis	25,490
Available-for-sale Securities	$ 25,526

X

- Definition

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

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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