Long-term Debt - Expected Annual Payments (Details) $ in Thousands	Jun. 30, 2025 USD ($)
Long-term Debt
2025 (six months remaining)	$ 16,114
2026	58,406
2027	47,144
2028	54,526
2029	36,867
Thereafter	81,710
Total	$ 294,767

Amount of expected payments on the revenue interest financing payable in remainder of current fiscal year.

No definition available.

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

Amount of total expected payments on the revenue interest financing payable.

No definition available.

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

Amount of expected payments on the revenue interest financing payable in fifth fiscal year and thereafter following current fiscal year.

No definition available.

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

Amount of expected payments on the revenue interest financing payable in fourth fiscal year following current fiscal year.

No definition available.

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

Amount of expected payments on the revenue interest financing payable in next fiscal year following current fiscal year.

No definition available.

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

Amount of expected payments on the revenue interest financing payable in third fiscal year following current fiscal year.

No definition available.

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

Amount of expected payments on the revenue interest financing payable in second fiscal year following current fiscal year.

No definition available.

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

No definition available.

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