Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Carrying Value and Fair Value of Certain Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table provides the carrying value and fair value of certain financial assets and liabilities of the Company measured at fair value on a recurring basis as of September 30, 2013 and December 31, 2012:

	Carrying Value		Fair Value Measurement at September 30, 2013
			Level 1		Level 2		Level 3
	(In thousands) (Unaudited)
Cash and cash equivalents	$	108,694	$	108,694	$	—	$	—
Restricted marketable securities	5		5		—		—
Ownership interest in common stock of NuPathe	12,437		12,437		—		—
Ownership interest in warrants and options of NuPathe	2,123		—		—		2,123
Available-for-sale securities	32		32		—		—
Warrant participations	417		—		—		417
Marketable securities—held-to-maturity:
Commercial paper	$	23,749	$	23,749	$	—	$	—
U.S. Treasury Bills	16,181		16,181		—		—
Government agency bonds	2,645		2,645		—		—
Certificates of deposit	14,849		14,849		—		—
Total marketable securities	$	57,424	$	57,424	$	—	$	—

	Carrying Value		Fair Value Measurement at December 31, 2012
			Level 1		Level 2		Level 3
	(In thousands) (Unaudited)
Cash and cash equivalents	$	66,029	$	66,029	$	—	$	—
Cash held in escrow	6,434		6,434		—		—
Restricted marketable securities	10		10		—		—
Ownership interest in common stock of NuPathe	8,897		8,897		—		—
Ownership interest in preferred stock, warrants and options of NuPathe	12,075		—		—		12,075
Available-for-sale securities	58		58		—		—
Warrant participations	423		—		—		423
Marketable securities—held-to-maturity:
Commercial paper	$	50,932	$	50,932	$	—	$	—
U.S. Treasury Bills	21,352		21,352		—		—
Government agency bonds	45,909		45,909		—		—
Certificates of deposit	21,823		21,823		—		—
Total marketable securities	$	140,016	$	140,016	$	—	$	—