Equity - Reconciliation of Net (Loss) Income and Weighted-Average Shares of Common Stock Outstanding for Calculating Basic and Diluted (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Net loss	$ (116,511)	$ 1,718	$ (748)	$ (1,114)	$ (37,318)	$ 4,214	$ 1,530	$ 2,740	$ (116,655)	$ (28,834)	$ (19,875)
Weighted average common shares outstanding:
Basic									13,835,128	9,279,324	9,124,452
Diluted									13,835,128	9,279,324	9,124,452
Net loss per share:
Basic									$ (8.43)	$ (3.11)	$ (2.18)
Diluted									$ (8.43)	$ (3.11)	$ (2.18)