XML 57 R44.htm IDEA: XBRL DOCUMENT
v3.20.4

Common Stock - Private Placement of Common Stock (Details) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 03, 2020 USD ($) Vote item $ / shares shares | Feb. 05, 2019 $ / shares shares | Dec. 31, 2020 USD ($) $ / shares | Mar. 05, 2020 $ / shares shares | Dec. 31, 2019 $ / shares | Jan. 31, 2019 $ / shares
Private Placement of Common Stock |  |  |  |  |  |
Common stock issued | shares |  | 7,557,142 |  |  |  |
Price per share (in dollars per share) |  | $ 1.75 |  |  |  |
Common Stock, Par or Stated Value Per Share |  |  | $ 0.001 |  | $ 0.001 |
January 2020 Private Placement |  |  |  |  |  |
Private Placement of Common Stock |  |  |  |  |  |
Exercise price of warrant |  |  | $ 1.055 | $ 2.11 |  | $ 1.75
Fixed cumulative percentage per annum |  |  | 8.00% |  |  |
Cumulative Dividends | $ |  |  | $ 372 |  |  |
Series A Preferred | January 2020 Private Placement |  |  |  |  |  |
Private Placement of Common Stock |  |  |  |  |  |
Common stock issued | shares | 1,421,801 |  |  |  |  |
Price per share (in dollars per share) | $ 10.54 |  |  |  |  |
Net proceeds from issuance of stock in private placement | $ | $ 25,322 |  |  |  |  |
Convertible Preferred Stock, Shares Issued upon Conversion | shares |  |  |  | 14,413,902 |  |
Common Stock, Par or Stated Value Per Share |  |  |  | $ 0.001 |  |
Value of beneficial conversion features | $ | $ 5,226 |  |  |  |  |
Number of special voting stock | Vote | 1 |  |  |  |  |
Number of members to elect of board of directors | item | 1 |  |  |  |  |
Series B Preferred | January 2020 Private Placement |  |  |  |  |  |
Private Placement of Common Stock |  |  |  |  |  |
Common stock issued | shares | 1,137,442 |  |  |  |  |
Price per share (in dollars per share) | $ 10.55 |  |  |  |  |
Convertible Preferred Stock, Shares Issued upon Conversion | shares |  |  |  | 11,531,133 |  |
Common Stock, Par or Stated Value Per Share |  |  |  | $ 0.001 |  |
Value of beneficial conversion features | $ | $ 4,173 |  |  |  |  |

X
- Definition Represents the information pertaining to the cumulative percentage of cash dividends entitled to Stock holders. + References No definition available. + Details
Name: | lptx_CumulativePercentageOfCashDividendsPerAnnumEntitledToStockholders
Namespace Prefix: | lptx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of members to elect of board of directors. + References No definition available. + Details
Name: | lptx_NumberOfMembersToElect
Namespace Prefix: | lptx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of special voting stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights. + References No definition available. + Details
Name: | lptx_NumberOfShareSpeicalVotingStock
Namespace Prefix: | lptx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via public placement after deducting issuance costs. + References No definition available. + Details
Name: | lptx_ProceedsFromIssuanceOfPrivatePlacementNetOfIssuanceCosts
Namespace Prefix: | lptx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued for each share of convertible preferred stock that is converted. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 + Details
Name: | us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cumulative cash dividends distributed to shareholders. + References No definition available. + Details
Name: | us-gaap_CumulativeDividends
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 + Details
Name: | us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 3: 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 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
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_SubsidiarySaleOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_PreferredClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_PreferredClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |