XML 71 R50.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Collaboration and Other Agreements, Boehringer (Details) - Boehringer Ingelheim GmbH (Boehringer) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2010 USD ($) Payment | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Collaboration and Other Agreements [Line Items] |  |  |  |
Nonrefundable upfront payment | $ 15,000,000 |  |  |
Number of annual maintenance payments received | Payment | 3 |  |  |
Clinical milestone payments | $ 34,000,000 |  |  |
Additional potential regulatory milestone payments under agreement | 88,500,000 |  |  |
Additional potential sales milestone payments under agreement | $ 82,500,000 |  |  |
Recognized revenue under agreement |  | $ 0 | $ 12,500,000 | $ 13,700,000
Milestone payment |  |  | 5,000,000 | $ 2,000,000
Deferred revenue |  | $ 0 | $ 0 |

X
- Definition Aggregate potential clinical milestone payments available to be earned under collaboration agreement. + References No definition available. + Details
Name: | mgnx_AdditionalPotentialClinicalMilestonePaymentsUnderAgreement
Namespace Prefix: | mgnx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate potential regulatory milestone payments available to be earned under a collaboration arrangement. + References No definition available. + Details
Name: | mgnx_AdditionalPotentialRegulatoryMilestonePaymentsUnderAgreement
Namespace Prefix: | mgnx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate potential sales milestone payments available to be earned under collaboration agreement. + References No definition available. + Details
Name: | mgnx_AdditionalPotentialSalesMilestonePaymentsUnderAgreement
Namespace Prefix: | mgnx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Initial fee received from collaboration or license agreement. + References No definition available. + Details
Name: | mgnx_NonRefundableUpfrontFees
Namespace Prefix: | mgnx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of annual maintenance payment received. + References No definition available. + Details
Name: | mgnx_NumberOfAnnualMaintenancePaymentReceived
Namespace Prefix: | mgnx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
Name: | us-gaap_DeferredRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_LicensesRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of consideration recognized during the period for the milestone or milestones. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 28 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=51671726&loc=SL6892177-166501 + Details
Name: | us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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