XML 41 R30.htm IDEA: XBRL DOCUMENT
v3.21.2

Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020 | Oct. 20, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total shares of common stock reserved (in shares) | 12,054,212 | 11,250,830 |
Liability for early exercise of stock options | $ 0.3 | $ 0.4 |
Stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Maximum contractual term | 10 years |  |
Exercise period from termination upon death | 12 months |  |
Exercise period from termination upon disability | 6 months |  |
Exercise period from termination upon all other separations | 3 months |  |
2020 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total shares of common stock reserved (in shares) |  |  | 9,000,000
Common stock reserved for issuance, increase percentage on first business day of each of next ten fiscal years | 4.00% |  |
2016 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total shares of common stock reserved (in shares) |  |  | 2,432,980
Minimum exercise price, percent of fair market value of common stock on grant date | 100.00% |  |
2016 Plan | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Service condition period for full vesting | 1 year |  |
2016 Plan | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Service condition period for full vesting | 4 years |  |

X
- Definition Common Stock, Capital Shares Reserved For Future Issuance, Annual Percentage Increase + References No definition available. + Details
Name: | tars_CommonStockCapitalSharesReservedForFutureIssuanceAnnualPercentageIncrease
Namespace Prefix: | tars_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Expiration Period After Date Of Termination Upon All Other Separations + References No definition available. + Details
Name: | tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponAllOtherSeparations
Namespace Prefix: | tars_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Expiration Period After Date Of Termination Upon Death + References No definition available. + Details
Name: | tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponDeath
Namespace Prefix: | tars_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Expiration Period After Date Of Termination Upon Disability + References No definition available. + Details
Name: | tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponDisability
Namespace Prefix: | tars_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Minimum Exercise Price, Percent Of Fair Market Value + References No definition available. + Details
Name: | tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumExercisePricePercentOfFairMarketValue
Namespace Prefix: | tars_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate number of common shares reserved for future issuance. + 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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
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_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=tars_EquityIncentivePlan2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=tars_EquityIncentivePlan2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |