Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net loss attributable to common stockholders	$ (28,246)	$ (70,852)	$ (1,201)
Other comprehensive income:
Unrealized loss on derivatives, net of tax benefit for the year ended December 31, 2015	(2,442)
Less interest expense on derivatives recognized into earnings	(1,521)
Comprehensive loss	$ (29,167)	$ (70,852)	$ (1,201)