Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 29,418	$ (18,728)	$ (79,700)
Comprehensive income (loss)	$ 29,418	$ (18,728)	$ (79,700)