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Legal Proceedings, Commitments and Contingencies (Details) - USD ($) |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Aug. 08, 2017 | Jul. 24, 2017 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Loss Contingencies [Line Items] |  |  |  |  |  |
Total settlements |  |  | $ 1,300,000 | $ 1,800,000 | $ 1,300,000 | $ 1,800,000
Subsequent Event | SEC Litigation |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Payments for legal settlements | $ 100,000 |  |  |  |  |
Litigation settlement with issuance of common stock | $ 200,000 |  |  |  |  |
Pending Litigation | Subsequent Event | Patel vs Galena biopharma, Inc |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Payments for legal settlements |  | $ 50,000 |  |  |  |
Total settlements |  | 1,300,000 |  |  |  |
Litigation settlement with issuance of common stock |  | $ 1,250,000 |  |  |  |
Settled Litigation | USAO NJ and DOJ |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Total settlements |  |  |  |  | 7,500,000 |
Commercial Business Segment | Settled Litigation | USAO NJ and DOJ |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency accrual |  |  | 7,500,000 |  | 7,500,000 |
Asset Purchase Agreement |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  | $ 1,500,000 |  | $ 1,500,000 |

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