Common Stock and Loss Per Share - Schedule of Antidilutive Securities Excluded from Computation of Loss Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from the Computation of Dilutive Loss per Share	3,336	2,803	2,336
Out-of-the-money stock options	2,900	2,700	2,000
Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from the Computation of Dilutive Loss per Share	30	0	0
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from the Computation of Dilutive Loss per Share	565	564	165
Convertible Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from the Computation of Dilutive Loss per Share	4,932	4,932	4,932