Consolidated Statements of Shareholders' Equity (USD $)
In Thousands, except Share data
Total
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Deficit [Member]
Balance at Dec. 31, 2011 $ 120,515 $ 1 $ 159,994 $ 53,188 $ (92,668)
Balance, Shares at Dec. 31, 2011   137      
Contributions from shareholder, value 162,155 372 161,783    
Contributions from shareholder, shares   37,133      
Net income (loss) 30,282       30,282
Other comprehensive income (loss) (28,615)     (28,615)  
Stock-based compensation 7,328   7,328    
Balance at Dec. 31, 2012 291,665 373 329,105 24,573 (62,386)
Balance, Shares at Dec. 31, 2012   37,270      
Net income (loss) (22,218)       (22,218)
Other comprehensive income (loss) 63,805     63,805  
Stock-based compensation 9,950   9,950    
Balance at Dec. 31, 2013 343,202 373 339,055 88,378 (84,604)
Balance, Shares at Dec. 31, 2013   37,270      
Issuance of common stock 198,089 115 197,974    
Issuance of common stock, Shares   11,500      
Net income (loss) (67,332)       (67,332)
Other comprehensive income (loss) (163,595)     (163,595)  
Stock-based compensation 10,501   10,501    
Balance at Dec. 31, 2014 $ 320,865 $ 488 $ 547,530 $ (75,217) $ (151,936)
Balance, Shares at Dec. 31, 2014   48,770