Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2015

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	2015			2014		2015			2014
Net income (loss) available to common stockholders	$	(14,219	)	$	3,466	$	(64,185	)	$	(76,846	)
Weighted average shares:
Basic	135,247			102,470		124,478			102,427
Effect of stock-based compensation plans	—			91		—			—
Diluted	135,247			102,561		124,478			102,427
Income (loss) per share:
Basic	$	(0.11	)	$	0.03	$	(0.52	)	$	(0.75	)
Diluted	$	(0.11	)	$	0.03	$	(0.52	)	$	(0.75	)