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Organization and Summary of Significant Accounting Policies (Error Correction) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Statement of Operations: |  |  |  |
Interest expense | $ (4,259) | $ (10,451) | $ (8,679) | $ (20,741)
Total other expense, net | (8,876) | (9,702) | (12,228) | (19,790)
Net loss | 17,656 | $ (34,838) | 34,356 | $ (94,061)
Net loss per share, basic and diluted (in dollars per share) |  | $ (0.15) |  | $ (0.41)
Statements of Comprehensive Loss: |  |  |  |
Comprehensive loss | 17,863 | $ (34,667) | 34,653 | $ (93,700)
Statements of Cash Flows: |  |  |  |
Net loss | $ 17,656 | (34,838) | 34,356 | (94,061)
Accretion of debt discount and debt issuance costs |  |  | $ 182 | 6,411
Restatement Adjustment [Member] | Correction of Amortization of Debt Discount Associated with the 2019 Notes [Member] |  |  |  |
Statement of Operations: |  |  |  |
Interest expense |  | 2,177 |  | 4,301
Total other expense, net |  | 2,177 |  | 4,301
Net loss |  | $ 2,177 |  | $ 4,301
Net loss per share, basic and diluted (in dollars per share) |  | $ 0.01 |  | $ 0.02
Statements of Comprehensive Loss: |  |  |  |
Comprehensive loss |  | $ 2,177 |  | $ 4,301
Statements of Cash Flows: |  |  |  |
Net loss |  | $ 2,177 |  | 4,301
Accretion of debt discount and debt issuance costs |  |  |  | $ (4,301)

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