Condensed Consolidated Statements of Comprehensive Loss (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Statement of Comprehensive Income [Abstract]        
Net loss $ (89,821) $ (11,669) $ (75,582) $ (20,001)
Other comprehensive (loss) income:        
Change in net unrealized (losses) or gains on cash flow hedges (875) 502 (1,277) 470
Net cash flow hedge losses reclassified to operations 331 95 654 210
Total comprehensive loss $ (90,365) $ (11,072) $ (76,205) $ (19,321)