(Loss) Earnings Per Share of Common Stock - Reconciliation of Numerator and Denominator for Basic and Diluted loss Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		9 Months Ended		12 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2018	Dec. 31, 2016
Earnings Per Share [Abstract]
Net loss available to common stockholders		$ (13,955)	$ (28,870)	$ (15,087)	$ (52,364)
Weighted average number of common shares outstanding – Basic and Diluted		77,071		83,369	77,685
Basic and Diluted		$ (0.18)	$ (0.37)	$ (0.18)	$ (0.67)
Weighted-average number of anti-dilutive options and restricted stock	[1]			1,283

[1] Weighted average number of anti-dilutive options is based upon the average closing price of the Company’s common stock on the NYSE for the period.