XML 17 R7.htm IDEA: XBRL DOCUMENT
v3.20.2

CONDENSED CONSOLIDATED STATEMENTS OF COVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
2019 Public Offering |  |  |
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) |  |  |
Issuance of common stock, issuance costs |  |  | $ 1,102
2020 Public offering |  |  |
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) |  |  |
Issuance of common stock, issuance costs |  | $ 3,472 |
Lincoln Park Capital Registered Offering Purchase Agreement Offering Member |  |  |
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) |  |  |
Issuance of common stock, issuance costs | $ 10 |  | $ 10

X
- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=lptx_IpoTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=lptx_LincolnParkCapitalRegisteredOfferingPurchaseAgreementOfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |