Stock Compensation (Tables)

6 Months Ended

Jun. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Total Compensation Cost from Share-Based Payments

The Company’s statements of operations included total compensation cost from awards under the Plans, the Inducement Awards, and purchases under the ESPP for the three and six-month periods ended June 30, 2016 and 2015, as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2016		2015		2016		2015
Compensation cost from:
Stock options	$	2,072	$	4,129	$	5,354	$	8,371
Stock and stock units	487		6,395		3,758		10,461
Purchases of common stock at a discount	99		120		265		246
	$	2,658	$	10,644	$	9,377	$	19,078
Compensation cost included in:
Research and development expense	$	1,524	$	4,180	$	4,478	$	7,996
Selling, general and administrative expense	1,134		6,464		4,899		11,082
	$	2,658	$	10,644	$	9,377	$	19,078

Stock Option Activity

Stock option activity under the Plans and Inducement Awards for the six-month period ended June 30, 2016 was as follows:

	Number of Shares		Weighted Average Exercise Price Per Share
Options outstanding, January 1, 2016	10,232,969		$	10.00
Granted	4,490,700		$	6.30
Forfeited	(1,928,884	)	$	8.71
Exercised	(540,619	)	$	4.95
Options outstanding, June 30, 2016	12,254,166		$	9.07

Stock and Stock Unit Activity

Stock and stock unit activity under the Plans and Inducement Awards for the six-month period ended June 30, 2016 was as follows:

	Number of Shares		Weighted Average Grant Date Fair Value
Outstanding, January 1, 2016	4,493,054		$	8.64
Granted / awarded	3,491,512		$	6.57
Forfeited	(2,513,304	)	$	7.64
Vested or restrictions lapsed	(1,855,022	)	$	8.48
Outstanding, June 30, 2016	3,616,240		$	7.42