XML 76 R59.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Note I - Debt Obligations (Details Textual) - USD ($) $ in Thousands |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 05, 2024 | Aug. 30, 2023 | Jan. 31, 2023 | Jan. 26, 2023 | Nov. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Mar. 01, 2024 | Nov. 17, 2023
Stock Issued During Period, Shares, Acquisitions (in shares) |  |  |  |  | 1,382,489 |  | 7,530,509 |  |
Proceeds from Issuance of Debt |  |  |  |  |  | $ 58,990 | $ 42,431 |  |
Debt Issuance Costs, Net |  |  |  |  |  | 1,127 | 82 |  |
Wells Fargo Bank, N.A. [Member] |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  |  |  | $ 37,700 |  |
Wells Fargo Bank, N.A. [Member] | Prime Rate [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.25% |  |  |  |  |
Wells Fargo Bank, N.A. [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Investments |  |  |  | 80.00% |  |  |  |  |
Wells Fargo Bank, N.A. [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Investments |  |  |  | 90.00% |  |  |  |  |
SWK Loans [Member] |  |  |  |  |  |  |  |  |
Payments to Acquire Notes Receivable |  | $ 12,000 | $ 12,000 |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions (in shares) |  | 98,683 | 98,683 |  |  |  |  |  |
Nantahala Note [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 5,000 | $ 5,000 |  |  |  |  |  | $ 5,000
Debt Instrument, Interest Rate, Stated Percentage |  | 9.00% |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage, If Unpaid Within Six Months |  | 12.00% |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Increase in Stated Percentage, If Unpaid Within Six Months |  | 3.00% |  |  |  |  |  | 3.00% |
Debt Instrument, Interest, Shares, Consecutive Trading Days For Calculation of VWAP (Day) |  | 20 days |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Interest |  | $ 600 |  |  |  |  |  |  |
Term Loans Under Credit Agreement [Member |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 100,000 |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt | 60,000 |  |  |  |  |  |  |  |
Debt Instrument, Available Amount Until 18 Months Following Closing Date | 20,000 |  |  |  |  |  |  |  |
Debt Instrument, Available Amount Until 18 Months Following Closing Date, Maximum Each Drawing | 10,000 |  |  |  |  |  |  |  |
Debt Instrument, Available Amount Until December 31, 2024 | 20,000 |  |  |  |  |  |  |  |
Debt Instrument, Net Product Sales Performance Benchmark | 100,000 |  |  |  |  |  |  |  |
Debt Instrument, Net Product Sales Performance Benchmark in Next Year | $ 125,000 |  |  |  |  |  |  |  |
Debt Instrument, Maximum Interest Payment, Percentage | 25.00% |  |  |  |  |  |  |  |
Interest Payable |  |  |  |  |  | 1,400 |  |  |
Debt Issuance Costs, Net |  |  |  |  |  | 2,200 |  |  |
Debt Instrument, Minimum Cash Balance |  |  |  |  |  | $ 20,000 |  |  |
Term Loans Under Credit Agreement [Member | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 7.00% |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate When Performance Benchmark Meet | 6.00% |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate When Performance Benchmark Meet in Next Year | 6.50% |  |  |  |  |  |  |  |
Debt Instrument, Floor Rate | 4.00% |  |  |  |  |  |  |  |

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of the required periodic payments applied to interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentPeriodicPaymentInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-1A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of interest payable on debt, including, but not limited to, trade payables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_InterestPayableCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsToAcquireNotesReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of shares of stock issued during the period pursuant to acquisitions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesAcquisitions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of debt available until 18 months following closing date under debt instrument. + References No definition available. + Details
Name: | zvra_DebtInstrumentAvailableAmountUntil18MonthsFollowingClosingDate
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum each drawing for amount available under debt instrument to draw after 18 months of debt closing date. + References No definition available. + Details
Name: | zvra_DebtInstrumentAvailableAmountUntil18MonthsFollowingClosingDateMaximumEachDrawing
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of debt available to be drawn until December 31, 2024. + References No definition available. + Details
Name: | zvra_DebtInstrumentAvailableAmountUntilDecember312024
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument when performance benchmark meet. + References No definition available. + Details
Name: | zvra_DebtInstrumentBasisSpreadOnVariableRateWhenPerformanceBenchmarkMeet
Namespace Prefix: | zvra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument when performance benchmark meet in next year. + References No definition available. + Details
Name: | zvra_DebtInstrumentBasisSpreadOnVariableRateWhenPerformanceBenchmarkMeetInNextYear
Namespace Prefix: | zvra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Floor rate of debt instrument. + References No definition available. + Details
Name: | zvra_DebtInstrumentFloorRate
Namespace Prefix: | zvra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Increase in the contractual interest rate for funds borrowed, under the debt agreement, if unpaid within six months. + References No definition available. + Details
Name: | zvra_DebtInstrumentInterestRateIncreaseInStatedPercentageIfUnpaidWithinSixMonths
Namespace Prefix: | zvra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement, if unpaid within six months. + References No definition available. + Details
Name: | zvra_DebtInstrumentInterestRateStatedPercentageIfUnpaidWithinSixMonths
Namespace Prefix: | zvra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The consecutive trading days for calculation of VWAP for interest to be paid in shares on debt instrument. + References No definition available. + Details
Name: | zvra_DebtInstrumentInterestSharesConsecutiveTradingDaysForCalculationOfVWAP
Namespace Prefix: | zvra_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum amount of interest payment allowed under debt instrument as a percentage. + References No definition available. + Details
Name: | zvra_DebtInstrumentMaximumInterestPaymentPercentage
Namespace Prefix: | zvra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum cash balance required for debt instrument to be active. + References No definition available. + Details
Name: | zvra_DebtInstrumentMinimumCashBalance
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of performance benchmark of net product sales under debt instrument. + References No definition available. + Details
Name: | zvra_DebtInstrumentNetProductSalesPerformanceBenchmark
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of performance benchmark of net product sales in next year under debt instrument. + References No definition available. + Details
Name: | zvra_DebtInstrumentNetProductSalesPerformanceBenchmarkInNextYear
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage of investments outstanding for maximum borrowing capacity of the debt instrument. + References No definition available. + Details
Name: | zvra_LineOfCreditFacilityMaximumBorrowingCapacityPercentageOfInvestments
Namespace Prefix: | zvra_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=zvra_WellsFargoBankNaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
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_AssetAcquisitionAxis=zvra_SWKLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=zvra_NantahalaNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=zvra_TermLoansUnderCreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |