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Schedule of activities for restricted stock awards (Details) - Restricted Stock Awards [Member] - Stock Option Plan 2021 [Member] - $ / shares | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Outstanding at beginning |  |
Outstanding at beginning |  |
Granted | 1,000,000 | 1,000,000
Granted | $ 3.01 | $ 3.01
Vested | 50,000 |
Vested | $ 3.31 |
Forfeited/canceled |  |
Forfeited/canceled |  |
Outstanding at ending | 950,000 | 1,000,000
Outstanding at ending | $ 2.99 | $ 3.01

X
- Definition The element represents share based compensation arrangement by share based payment award options forfeitures in period unvested. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodUnvested
Namespace Prefix: | krmd_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The element represents share based compensation arrangement by share based payment award options grants in period gross unvested. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrossUnvested
Namespace Prefix: | krmd_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The element represents share based compensation arrangement by share based payment award options outstanding number unvested. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumberUnvested
Namespace Prefix: | krmd_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The element represents share based compensation arrangement by share based payment award options outstanding weighted average exercise price unvested. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceUnvested
Namespace Prefix: | krmd_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The element represents share based compensation arrangement by share based payment award options vested in period gross. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodGross
Namespace Prefix: | krmd_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The element represents share based compensation arrangements by share based payment award options forfeitures in period weighted average exercise price unvested. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePriceUnvested
Namespace Prefix: | krmd_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The element represents share based compensation arrangements by share based payment award options grants in period weighted average exercise price unvested. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePriceUnvested
Namespace Prefix: | krmd_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The element represents share based compensation arrangements by share based payment award options vested in period weighted average exercise price. + References No definition available. + Details
Name: | krmd_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageExercisePrice
Namespace Prefix: | krmd_
Data Type: | dtr-types:perShareItemType
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
- Details
Name: | us-gaap_AwardTypeAxis=krmd_RestrictedStockAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=krmd_StockOptionPlan2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |