Annual report pursuant to Section 13 and 15(d)

Debt (Details)

v2.4.0.8
Debt (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Notes [Member]
Jan. 30, 2013
Notes [Member]
Debt Instrument [Roll Forward]          
Embedded derivatives, beginning balance         $ 59,204
Convertible notes, beginning balance         175,000
Discount, beginning balance         (59,204)
Total, beginning balance         175,000
Amortization of debt discount       6,596  
Change in fair value of embedded derivative (36,489) 1,340 (39) 43,082  
Embedded derivative, conversion       (1,199)  
Convertible notes, conversion       (16,936)  
Conversion of debt discount       5,369  
Total, conversion       (12,766)  
Embedded derivatives, ending balance       101,087 59,204
Convertible notes, ending balance       158,064 175,000
Discount, ending balance       (47,239) (59,204)
Total, ending balance       $ 211,912 $ 175,000