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Legal Proceedings, Commitments and Contingencies Details (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	9 Months Ended
	Jan. 13, 2014	Sep. 30, 2014	Sep. 30, 2013
Loss Contingencies [Line Items]
Payments to Acquire Businesses, Gross	$ 2,000	$ 2,315	$ 0
Mills Pharamaceuticals Milestone 1		2,000,000
Mills Pharamaceuticals Milestone 2		2,000,000
Mills Pharmaceuticals Maximum Shares Issuable for Milestones		3,000,000
Mills Pharmaceuticals - Price per share floor		$ 4.84
Mills Pharmaceuticals - price per share ceiling		$ 6.84
Closing price of the Company's common stock		$ 4.84
Issuance of common stock for milestone payment		6,840
Common Stock [Member]
Loss Contingencies [Line Items]
Issuance of common stock for milestone payment, other		3,000,000
Additional Paid-in Capital [Member]
Loss Contingencies [Line Items]
Issuance of common stock for milestone payment		$ 6,840

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Closing price of common stock.

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Mills Pharamaceuticals Milestone 1 - 2,000,000 shares of our common stock upon initiating the first clinical trial of GALE-401.

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Mills Pharamaceuticals Milestone 2 - upon initiating the Phase 3 clinical trial in GALE-401

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Mills Pharmaceuticals Maximum Shares Issuable for Milestones

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Mills Pharmaceuticals - price per share ceiling - The number of shares issuable upon the milestones is subject to increase based on a formula specified in the purchase agreement, up to a maximum of 3,000,000 shares for each milestone, in the event the five‑day average trailing closing price of our common stock (the “Average Price”) is less than $4.84 at the time the applicable milestone is achieved. Similarly, the number of shares issuable upon achievement of the milestones is subject to decrease based on such formula if the Average Price exceeds $6.84 at the time of achievement of the applicable milestone.

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Mills Pharmaceuticals - Price per share floor - The number of shares issuable upon the milestones is subject to increase based on a formula specified in the purchase agreement, up to a maximum of 3,000,000 shares for each milestone, in the event the five‑day average trailing closing price of our common stock (the “Average Price”) is less than $4.84 at the time the applicable milestone is achieved. Similarly, the number of shares issuable upon achievement of the milestones is subject to decrease based on such formula if the Average Price exceeds $6.84 at the time of achievement of the applicable milestone.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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