Accrued Compensation Incentive

No definition available.

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- Definition

Collaboration Agreement, Term

+ References

No definition available.

+ Details

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- Definition

Incentive Fee Percentage Equal To Gross Value Paid By Purchaser In Cash

+ References

No definition available.

+ Details

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- Definition

Incentive Fee Percentage Equal To Post Money Market Value

+ References

No definition available.

+ Details

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Namespace Prefix:	gale_
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- Definition

Percentage Of Ownership Outstanding Share Capital

+ References

No definition available.

+ Details

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- Definition

Stock Issued For Incentive Fee Payment In Connection With Acquisition During Period Share

+ References

No definition available.

+ Details

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of expenses related to the managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount of the unpaid portion of the fee payable to the managing member or general partner for management of the fund or trust.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount paid to managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3367-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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Related Party Transactions (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Dec. 29, 2017	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Feb. 28, 2017
Related Party Transaction [Line Items]
Collaboration agreement, term		3 years
Payment for management fee		$ 0.1
Management fee expense				$ 0.3
Accrued compensation incentive				$ 0.1
Incentive fee percentage equal to post money market value			2.00%		2.00%
Incentive fee percentage equal to gross value paid by purchaser in cash			2.00%
Stock issued for incentive fee payment in connection with acquisition during period share	119,672
General and administrative expense	$ 0.9
Equilibria Collaboration Agreement
Related Party Transaction [Line Items]
Management fee payable	$ 0.1
Dr. Angelos M. Stergiou \| Msk License Agreement
Related Party Transaction [Line Items]
Percentage of ownership outstanding share capital			1.90%	7.80%