Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net Loss Attributable to Parent	$ 30,759	$ 15,282	$ 31,812	$ 8,370
Weighted average common shares outstanding, basic	39,378	39,150	39,317	39,073
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	519	663	546	717
Weighted average common shares outstanding, diluted	39,897	39,813	39,863	39,790
Basic (in dollars per share)	$ 0.78	$ 0.39	$ 0.81	$ 0.21
Diluted (in dollars per share)	$ 0.77	$ 0.38	$ 0.80	$ 0.21