Interest Expense - Summary of Interest Expense by Cash and Non-Cash Components (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
Debt Instrument [Line Items] | ||||
Cash interest expense | $ (324) | $ (417) | $ (696) | $ (881) |
Non-cash interest expense | ||||
Non-cash interest expense | (99) | (78) | ||
Loss on extinguishment of 2013 Notes | (8,331) | |||
Non-cash capitalized interest expense | 180 | 0 | 411 | 0 |
Total non-cash interest expense | 57 | (73) | (9,412) | (12,234) |
Total interest expense | (267) | (490) | (10,108) | (13,115) |
Convertible Notes [Member]
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Non-cash interest expense | ||||
Non-cash interest expense | 0 | 0 | (1,250) | (9,204) |
Debt issuance costs [Member]
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Non-cash interest expense | ||||
Non-cash interest expense | (48) | (39) | (100) | (140) |
Warrant and Derivative Related Debt Discounts [Member]
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Non-cash interest expense | ||||
Non-cash interest expense | (75) | (34) | (142) | (2,890) |
2013 Notes [Member]
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Non-cash interest expense | ||||
Loss on extinguishment of 2013 Notes | $ 0 | $ 0 | $ (8,331) | $ 0 |