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Represents the exercise price per share of options to purchase common stock granted to executives in connection with a merger agreement.

No definition available.

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Data Type:	num:perShareItemType
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Period Type:	duration

Represents the number of executives to whom the Company granted options to purchase shares of common stock in connection with a merger agreement.

No definition available.

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Represents the number of shares of common stock each executive can purchase with options granted in connection with a merger agreement.

No definition available.

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Data Type:	xbrli:sharesItemType
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Represents the remaining vesting period subsequent to the first anniversary of the date of the grant.

No definition available.

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Data Type:	xbrli:durationItemType
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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.

No definition available.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Percentage of vesting of share-based compensation awards.

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_BusinessAcquisitionAxis=lptx_MacrocureLTDMember
Namespace Prefix:
Data Type:	na
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