The amount of cash and cash equivalents to be maintained during year two.

No definition available.

Name:	lqda_MinimumCashAndCashEquivalentsRequiredToBeMaintainedDuringYearTwo
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents number of tranches.

+ References

No definition available.

+ Details

Name:	lqda_NumberOfTranches
Namespace Prefix:	lqda_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of investment amount to be paid when payment has not been made in full on approval from FDA.

+ References

No definition available.

+ Details

Name:	lqda_PercentageOfInvestmentAmountToBePaid
Namespace Prefix:	lqda_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of investment amount to be repaid under the agreement on receiving approval from food and drug administration.

+ References

No definition available.

+ Details

Name:	lqda_PercentageOfInvestmentAmountToBeRepaidOnFinalApproval
Namespace Prefix:	lqda_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Per the terms of the revenue interest financing agreement, the aggregate net sales threshold amount that will trigger the remaining amount to be funded.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementAggregateNetSalesThreshold
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The total amount funded under the revenue interest financing agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementAmountFunded
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount funded under the second tranche per the revenue financing agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementAmountFundedUnderSecondTranche
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of available funding per the revenue financing agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementAmountOfFundingAvailable
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of discount on the revenue interest financing agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementDiscount
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The effective annual interest rate under revenue interest financing agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementEffectiveAnnualInterestRate
Namespace Prefix:	lqda_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The hard cap expressed as percentage to terminate the interest revenue payment agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementHardCapPercentage
Namespace Prefix:	lqda_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

The initial investment amount received under the revenue interest financing agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementInitialInvestmentAmount
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Internal rate of return on investment amount.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementInternalRateOfReturn
Namespace Prefix:	lqda_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The investment amount received upfront under the revenue interest financing agreement.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementMaximumInvestmentAmount
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The remaining amount to be funded upon mutual agreement of the parties and upon achievement of aggregate net sales target.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingAgreementRemainingAmountToBeFundedUponAchievementOfSalesTarget
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of revenue interest financing payable, current portion as of balance sheet date.

+ References

No definition available.

+ Details

Name:	lqda_RevenueInterestFinancingPayableCurrent
Namespace Prefix:	lqda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

Reference 4: 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 5: 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 6: 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 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69E

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69F
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69F

Reference 9: 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

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-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

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 26: 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 27: 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

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481303/470-50-40-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481303/470-50-40-4

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=lqda_ArSiliconValleyBankTermLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=lqda_RevenueInterestFinancingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=lqda_OnFirstFundedPortionOfInvestmentAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=lqda_OnThirdPortionOfFundedInvestmentAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=lqda_OnFourthPortionOfFundedInvestmentAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=lqda_OnSecondPortionOfFundedInvestmentAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=lqda_SecondAndThirdAmendmentsToRevenueInterestFinancingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=lqda_FourthAmendmentToRevenueInterestFinancingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=lqda_FifthAmendmentToRevenueInterestFinancingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=lqda_SixthAmendmentToRevenueInterestFinancingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-term Debt - Terms (Details)										12 Months Ended
Long-term Debt - Terms (Details)	Jun. 23, 2025 USD ($)	Mar. 17, 2025 USD ($)	Sep. 12, 2024 USD ($)	Sep. 11, 2024	Jan. 05, 2024 USD ($)	Jan. 03, 2024	Jul. 27, 2023 USD ($)	Jan. 27, 2023 USD ($)	Jan. 09, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Long-Term Debt
Revenue interest financing payable, current											$ 44,140,000	$ 18,016,000
Discount on long-term debt											1,000,000
A&R Silicon Valley Bank Term Loan
Long-Term Debt
Amount of debt repaid with initial investment from RIFA								$ 22,200,000
Loss on extinguishment of debt										$ 2,300,000
HCR Agreement
Long-Term Debt
RIFA, maximum investment amount									$ 175,000,000
RIFA, initial investment amount								$ 32,500,000
RIFA, Hard Cap percentage									175
Percentage of investment amount to be repaid on final approval									100
Percentage of investment amount to be paid									100
Minimum cash and cash equivalents required to be maintained during next year									$ 15,000,000
Effective interest rate percentage									17.30%
HCR Agreement \| On first funded portion of investment amount
Long-Term Debt
RIFA, internal rate of return									18.00%
RIFA, amount funded									$ 67,500,000
HCR Agreement \| On Third Portion Of Funded Investment Amount
Long-Term Debt
RIFA, internal rate of return									13.00%
RIFA, amount funded									$ 50,000,000
HCR Agreement \| On Fourth Portion Of Funded Investment Amount
Long-Term Debt
RIFA, internal rate of return									12.00%
RIFA, amount funded									$ 25,000,000
HCR Agreement \| On second portion of funded investment amount
Long-Term Debt
RIFA, internal rate of return									16.00%
RIFA, amount funded									$ 57,500,000
Second and Third Amendments to HCR Agreement
Long-Term Debt
Amount funded under the second tranche							$ 10,000,000
Effective interest rate percentage							17.20%
Fourth Amendment to HCR Agreement
Long-Term Debt
Amount funded under the second tranche					$ 25,000,000
Effective interest rate percentage						18.00%
Fifth Amendment to HCR Agreement
Long-Term Debt
Amount funded under the second tranche			$ 32,500,000
Effective interest rate percentage				16.00%
Sixth Amendment to HCR Agreement
Long-Term Debt
Revenue interest financing agreement		$ 100,000,000
Number of tranches		3
RIFA, amount funded	$ 50,000,000	$ 25,000,000
Effective interest rate percentage	14.40%	15.80%
Remaining amount to be funded upon mutual agreement of HCR and achievement of sales target											25,000,000
RIFA, aggregate net sales threshold											$ 100,000,000