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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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