Stockholders' Equity and Warrant Liability (Tables)

9 Months Ended

Sep. 30, 2012

Changes in Stockholders' Equity

The changes in stockholders’ equity for the nine-month period ended September 30, 2012 were as follows:

								Accumulated
					Additional			Other
	Common Stock				Paid-in			Comprehensive		Accumulated
$ in thousands	Shares		Amount		Capital			Income		Deficit			Total
Balance, January 1, 2012		157,608,702	$	158	$	776,946		$	—	$	(556,963	)	$	220,141
Issuance of common stock pursuant to warrant exercises		5,805,843		6		87,039								87,045
Issuance of common stock pursuant to ARIAD stock plans		3,161,125		3		8,199								8,202
Stock-based compensation						12,289								12,289
Payment of tax withholding obligations related to stock based compensation						(2,615	)							(2,615	)
Net unrealized gains on marketable securities									20					20
Net loss											(160,419	)		(160,419	)
Balance, September 30, 2012		166,575,670	$	167	$	881,858		$	20	$	(717,382	)	$	164,663