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Financial Instruments and Marketable Securities - Additional Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Financial Instruments and Marketable Securities [Abstract]
Dollar value of transfers between levels	$ 0	$ 0

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- Details

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- Definition

Marketable Security Level Transfers

+ References

No definition available.

+ Details

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