XML 81 R60.htm IDEA: XBRL DOCUMENT
v3.7.0.1

License Agreements - Additional Information (Detail) | Dec. 24, 2015 USD ($) Installment | Dec. 16, 2015 USD ($) | Nov. 19, 2015 USD ($) Installment | Dec. 31, 2016 USD ($)
--- | --- | --- | --- | ---
Sentynl Therapeutics, Inc. |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Consideration receivable under agreement |  |  | $ 12,000,000 |
Upfront payment receivable under agreement |  |  | 8,000,000 |
Contingent consideration receivable under agreement |  |  | $ 4,000,000 |
Number of one-time future milestone payments | Installment |  |  | 2 |
Sentynl Therapeutics, Inc. | Minimum |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Contingent consideration threshold, net sales |  |  | $ 25,000,000 |
Sentynl Therapeutics, Inc. | Maximum |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Contingent consideration threshold, net sales |  |  | $ 35,000,000 |
Midatech Pharma PLC |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Consideration receivable under agreement | $ 29,750,000 |  |  |
Upfront payment receivable under agreement | 3,750,000 |  |  |
Contingent consideration receivable under agreement | $ 26,000,000 |  |  |
Number of one-time future milestone payments | Installment | 4 |  |  |
Midatech Pharma PLC | Minimum |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Contingent consideration threshold, net sales | $ 12,000,000 |  |  |
Midatech Pharma PLC | Maximum |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Contingent consideration threshold, net sales | $ 70,000,000 |  |  |
Monosol Rx, LLC |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Payment of upfront fee |  | $ 900,000 |  |
Payment of upfront fee, percentage of future milestone payments received |  | 20.00% |  |
M D Anderson Cancer Center |  |  |  |
License And Collaboration Agreements [Line Items] |  |  |  |
Annual maintenance fee |  |  |  | $ 200,000
Milestone payment |  |  |  | $ 200,000

X
- Definition Annual Maintenance Fee + References No definition available. + Details
Name: | gale_AnnualMaintenanceFee
Namespace Prefix: | gale_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Future Milestone Payment + References No definition available. + Details
Name: | gale_FutureMilestonePayment
Namespace Prefix: | gale_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition License And Collaboration Agreements [Line Items] + References No definition available. + Details
Name: | gale_LicenseAndCollaborationAgreementsLineItems
Namespace Prefix: | gale_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Licensing Agreement, Number Of One-Time Future Cash Milestone Payments + References No definition available. + Details
Name: | gale_LicensingAgreementNumberOfOneTimeFutureCashMilestonePayments
Namespace Prefix: | gale_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase Agreement, Consideration Receivable Under Agreement + References No definition available. + Details
Name: | gale_PurchaseAgreementConsiderationReceivableUnderAgreement
Namespace Prefix: | gale_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Purchase Agreement, Contingent Consideration Receivable Under Agreement + References No definition available. + Details
Name: | gale_PurchaseAgreementContingentConsiderationReceivableUnderAgreement
Namespace Prefix: | gale_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Purchase Agreement, Contingent Consideration Threshold, Net Sales + References No definition available. + Details
Name: | gale_PurchaseAgreementContingentConsiderationThresholdNetSales
Namespace Prefix: | gale_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Purchase Agreement, Payment of Upfront Fee + References No definition available. + Details
Name: | gale_PurchaseAgreementPaymentofUpfrontFee
Namespace Prefix: | gale_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Purchase Agreement, Payment of Upfront Fee, Percentage of Future Milestone Payments Received + References No definition available. + Details
Name: | gale_PurchaseAgreementPaymentofUpfrontFeePercentageofFutureMilestonePaymentsReceived
Namespace Prefix: | gale_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase Agreement, Upfront Payment Receivable Under Agreement + References No definition available. + Details
Name: | gale_PurchaseAgreementUpfrontPaymentReceivableUnderAgreement
Namespace Prefix: | gale_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CounterpartyNameAxis=gale_SentynlTherapeuticsInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CounterpartyNameAxis=gale_MidatechPharmaPLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CounterpartyNameAxis=gale_MonosolRxLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=gale_MDAndersonCancerCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |