Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three months ended September 30,					Nine months ended September 30,
In thousands except per share amounts	2014		2013			2014			2013
Net income (loss) available to common stockholders	$	3,466	$	(46,265	)	$	(76,846	)	$	(69,035	)
Weighted average shares:
Basic	102,470		100,778			102,427			96,893
Effect of stock-based compensation plans	91		—			—			—
Diluted	102,561		100,778			102,427			96,893
Income (loss) per share:
Basic	$	0.03	$	(0.46	)	$	(0.75	)	$	(0.71	)
Diluted	$	0.03	$	(0.46	)	$	(0.75	)	$	(0.71	)