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Share-based Compensation - Warrants (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Number of Options |  |  |
Outstanding at beginning of period | 210,500 | 150,000 |
Granted | 3,426,690 | 60,500 |
Outstanding at end of period | 3,637,190 | 210,500 | 150,000
Exercisable at end of period | 3,637,190 |  |
Weighted Average Exercise Price |  |  |
Outstanding at beginning of period | $ 0.85938 | $ 0.49000 |
Granted | 5.42717 | 1.7752 |
Outstanding at end of period | $ 5.16281 | $ 0.85938 | $ 0.49000
Exercisable at end of period | $ 5.16281 |  |
Weighted Average Contractual Term in Years |  |  |
Granted | 4 years 11 months 23 days | 5 years |
Outstanding at December 31, | 4 years 7 months 17 days | 2 years 6 months 14 days | 2 years 9 months 21 days
Exercisable at end of period | 4 years 7 months 17 days |  |
Intrinsic value of vested outstanding warrants | $ 372,000 |  |

X
- Definition Number of warrants or rights exercisable at the end of the reporting period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightExercisableNumber
Namespace Prefix: | topp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term of warrants or rights exercisable, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightExercisableWeightedAverageContractualTerm
Namespace Prefix: | topp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average exercise price of warrants or rights exercisable at the end of the reporting period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightExercisableWeightedAverageExercisePrice
Namespace Prefix: | topp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of warrants or rights granted during the period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightGrantsInPeriodNumber
Namespace Prefix: | topp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term of warrants or rights granted during the period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightGrantsInPeriodWeightedAverageContractualTerm
Namespace Prefix: | topp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average exercise price of warrants or rights granted during the period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | topp_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of warrants outstanding. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightOutstandingIntrinsicValue
Namespace Prefix: | topp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightOutstandingNumberRollForward
Namespace Prefix: | topp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term of warrants or rights outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightOutstandingWeightedAverageContractualTerm
Namespace Prefix: | topp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightOutstandingWeightedAverageContractualTermRollForward
Namespace Prefix: | topp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average exercise price of warrants or rights outstanding at the end of the reporting period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice
Namespace Prefix: | topp_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | topp_ClassOfWarrantOrRightOutstandingWeightedAverageExercisePriceRollForward
Namespace Prefix: | topp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant