XML 92 R75.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Note N - Fair Value of Financial Instruments - Fair Value Assumptions for Warrant Liabilities (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 yr $ / shares | Dec. 31, 2023 yr $ / shares
Weighted average fair value (in dollars per share) | $ / shares | $ 3.25 | $ 2.94
Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member] |  |
Measurement Input | 0.0408 | 0.0376
Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member] |  |
Measurement Input | 0.0423 | 0.0412
Measurement Input, Price Volatility [Member] | Minimum [Member] |  |
Measurement Input | 0.6214 | 0.6201
Measurement Input, Price Volatility [Member] | Maximum [Member] |  |
Measurement Input | 0.6868 | 0.9242
Measurement Input, Expected Dividend Rate [Member] |  |
Measurement Input |  | 0
Measurement Input, Expected Dividend Rate [Member] | Maximum [Member] |  |
Measurement Input | 0 |
Measurement Input, Expected Term [Member] | Minimum [Member] |  |
Measurement Input | 1.02 | 2
Measurement Input, Expected Term [Member] | Maximum [Member] |  |
Measurement Input | 3.89 | 4.9

X
- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the weighted average fair value under fair value assumptions for warrant liabilities. + References No definition available. + Details
Name: | zvra_ClassOfWarrantOrRightLiabilityWeightedAverageFairValue
Namespace Prefix: | zvra_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
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: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |