XML 51 R33.htm IDEA: XBRL DOCUMENT
v3.20.2

The Company - Revenue Associated With The Following license agreements (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Recognized Revenue Associated with The Following License Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 25,504 | $ 1,244 | $ 1,008 | $ 1,157 | $ 1,129 | $ 1,249 | $ 2,049 | $ 488 | $ 28,913 | $ 4,915 | $ 1,622
KKC Agreements [Member] |  |  |  |  |  |  |  |  |  |  |
Recognized Revenue Associated with The Following License Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 27,543 | 2,557 |
Helsinn License Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Recognized Revenue Associated with The Following License Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,370 | 2,358 | 1,622
License transferred at a point in time [Member] |  |  |  |  |  |  |  |  |  |  |
Recognized Revenue Associated with The Following License Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 20,988 | 879 |
Services performed over time [Member] |  |  |  |  |  |  |  |  |  |  |
Recognized Revenue Associated with The Following License Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 4,860 | $ 4,036 | $ 1,622
Cumulative catch-up adjustment [Member] |  |  |  |  |  |  |  |  |  |  |
Recognized Revenue Associated with The Following License Agreements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 3,065 |  |

X
- References No definition available. + Details
Name: | meip_RecognizedRevenueAssociatedWithTheFollowingLicenseAgreementsLineItems
Namespace Prefix: | meip_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=meip_KkcAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=meip_HelsinnLicenseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredAtPointInTimeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredOverTimeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TimingOfTransferOfGoodOrServiceAxis=meip_CumulativeCatchupAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |