Annual report pursuant to Section 13 and 15(d)

Debt - Notes (Details)

v3.3.1.900
Debt - Notes (Details) - Notes - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Roll Forward]    
Embedded conversion option, beginning balance $ 65,947 $ 101,087
Convertible notes, beginning balance 87,642 158,064
Discount, beginning balance (22,135) (47,239)
Total, beginning balance 131,454 211,912
Amortization of debt discount 2,613 5,662
Change in fair value of embedded derivative 36,587 12,213
Embedded conversion option, conversion (78,797) (47,353)
Convertible notes, conversion (55,442) (70,422)
Discount, conversion 12,997 19,442
Conversion (121,242) (98,333)
Embedded conversion option, ending balance 23,737 65,947
Convertible notes, ending balance 32,200 87,642
Discount, ending balance (6,525) (22,135)
Total, ending balance $ 49,412 $ 131,454