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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2026 | Jun. 30, 2025
Cash flows from operating activities: |  |
Net income | $ 46,642 | $ 71,608
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |
Stock-based compensation expense | 6,074 | 5,579
Impairment of intangible assets | 0 | 58,710
Inventory obsolescence charge | 485 | 11,681
Income tax expense | 7,617 | 3,381
Depreciation and amortization expense | 732 | 3,300
Non-cash lease expense | 240 | 0
Non-cash interest expense | 342 | 1,352
Fair value adjustment related to warrant and CVR liability | 5,440 | (4,127)
Accretion on investments | (1,219) | (1,060)
Fair value adjustment related to investments | 356 | 5
Loss on extinguishment of debt | 2,756 | 0
Loss on derivative liability | 7,216 | 0
Cash paid to settle derivative instrument and payoff premium | (9,016) | 0
Settlement of royalties to Aquestive | (4,893) | 0
Paid-in-kind interest | (3,134) | 0
Gain on sale of future royalties, intellectual property, and other assets, net | (43,314) | 0
Consulting fees paid in common stock | 0 | 75
(Gain) loss on foreign currency exchange rates | (1,809) | 131
Gain on sale of PRV | 0 | (148,325)
Change in assets and liabilities: |  |
Accounts and other receivables | 1,150 | (6,969)
Prepaid expenses and other current assets | 2,202 | (296)
Inventories | (325) | (586)
Other long-term assets | 45 | 0
Operating lease right-of-use assets | (234) | (798)
Accounts payable and accrued expenses | 1,791 | (11,269)
Discount and rebate liabilities | 3,457 | 6,359
Operating lease liabilities | (234) | 746
Other liabilities | 807 | (1,320)
Net cash provided by (used in) operating activities | 23,174 | (11,823)
Cash flows from investing activities: |  |
Sale of future royalties, intellectual property, and other assets, net | 48,935 | 0
Purchases of property and equipment | (252) | (312)
Purchases of investments | (80,836) | (157,712)
Sales and maturities of investments | 143,222 | 30,500
Proceeds from sale of PRV | 0 | 150,000
Net cash provided by investing activities | 111,069 | 22,476
Cash flows from financing activities: |  |
Repayment of debt | (60,092) | 0
Payments for employee taxes related to stock awards | (1,485) | 0
Proceeds from Employee Stock Purchase Plan | 434 | 413
Proceeds from issuance of common stock for options exercised | 753 | 2,947
Proceeds from issuance of common stock for warrants exercised | 9,171 | 0
Payments of principal on insurance financing arrangements | 0 | (372)
Net cash (used in) provided by financing activities | (51,219) | 2,988
Effect of exchange rate changes on cash and cash equivalents | (109) | 286
Net increase in cash and cash equivalents | 82,915 | 13,927
Cash and cash equivalents, beginning of period | 62,406 | 33,785
Cash and cash equivalents, end of period | 145,321 | 47,712
Supplemental cash flow information: |  |
Cash paid for interest | 1,370 | 2,626
Right-of-use assets obtained in exchange for lease liabilities | 460 | 1,115
Cash paid for income taxes | $ 3,178 | $ 0

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Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gain (Loss) On Sale Of Future Royalties, Intellectual Property, And Other Assets, Net + References No definition available. + Details
Name: | zvra_GainLossOnSaleOfFutureRoyaltiesIntellectualPropertyAndOtherAssetsNet
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of noncash adjustment due to income tax expense (benefit). + References No definition available. + Details
Name: | zvra_IncomeTaxExpenseBenefitNoncashAdjustment
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of increase (decrease) in operating lease right-of-use assets. + References No definition available. + Details
Name: | zvra_IncreaseDecreaseInOperatingLeaseRightOfUseAsset
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payment of Paid-in-Kind Interest + References No definition available. + Details
Name: | zvra_PaymentOfPaidInKindInterest
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents payments of principal on insurance financing arrangements. + References No definition available. + Details
Name: | zvra_PaymentsOfPrincipalOnInsuranceFinancingArrangements
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds From Sale Of Priority Review Voucher + References No definition available. + Details
Name: | zvra_ProceedsFromSaleOfPriorityReviewVoucher
Namespace Prefix: | zvra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration