Stockholders' Deficit (Tables)

9 Months Ended

Sep. 30, 2016

Equity [Abstract]

Schedule of Changes in Stockholders' Equity

The changes in stockholders' equity for the nine-month period ended September 30, 2016 were as follows:

				Additional			Accumulated Other
	Common Stock			Paid-in			Comprehensive			Accumulated			Stockholders’
In thousands, except share data	Shares	Amount		Capital			Income (Loss)			Deficit			Equity
Balance, January 1, 2016	189,662,148	$	190	$	1,338,585		$	3,835		$	(1,445,751	)	$	(103,141	)
Issuance of shares pursuant to ARIAD stock plans	4,429,744	4		14,230			—			—			14,234
Stock-based compensation	—	—		14,659			—			—			14,659
Payments of tax withholding obligations related to stock compensation	—	—		(1,541		)	—			—			(1,541		)
Other comprehensive loss	—	—		—			(1,733		)	—			(1,733		)
Reclassification into earnings upon sale of European operations	—	—		—			2,939						2,939
Net Income	—	—		—			—			28,234			28,234
Balance, September 30, 2016	194,091,892	$	194	$	1,365,933		$	5,041		$	(1,417,517	)	$	(46,349	)