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Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2013

Marketable Securities [Abstract]

Summary of marketable securities

		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
		(in thousands)
Available-for-sale securities:
September 30, 2013:
Corporate debt securities		$	401			$	—			$	—			$	401
December 31, 2012:
Corporate debt securities		$	10,500			$	35			$	(50	)		$	10,485

Schedule of available-for-sale corporate debt securities

		Fair Value
		(in thousands)
Within one year		$	401
After one year through five years			—
After five years through ten years			—
After ten years			—
Total		$	401

Summary of Available-for-sale securities in unrealized loss position for other-than-temporary impairments

		Unrealized Losses				Fair Value
		(in thousands)
December 31, 2012:
Corporate debt securities		$	50			$	2,500

X

- Definition

Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

+ References

No definition available.

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- Definition

Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

+ References

No definition available.

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- Definition

For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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