Note 10 - Stockholders' Equity (Details Textual) - USD ($)							3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 12, 2025	Mar. 26, 2025	Jan. 03, 2025	Jan. 01, 2025	Apr. 30, 2024	Jan. 03, 2024	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2013	Jan. 01, 2026	Dec. 31, 2024	Jun. 23, 2022
Common Stock, Shares Authorized (in shares)										50,000,000				50,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)										$ 0.001				$ 0.001
Common Stock, Shares, Issued (in shares)										9,627,064				9,475,443
Share-Based Payment Arrangement, Amount Withheld for Tax Withholding Obligation							$ 53,093	$ (104,940)	$ 0
Common Stock, Shares, Outstanding (in shares)										9,627,064				9,475,443
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)										478,890
Share-Based Payment Arrangement, Expense										$ 730,335	$ 521,791
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount										$ 895,456
Restricted Stock Units (RSUs) [Member] \| The 2022 Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)										609,385
Senior Promissory Notes Warrant [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 2													$ 5.2
Fair Value Adjustment of Warrants		$ 220,000
Second Amendment to the Note [Member] \| Event of Default [Member]
Debt Instrument, Interest Rate, Stated Percentage		13.00%
Debt Instrument, Interest Rate, Stated Percentage, Monthly Step-up		1.00%
Second Amendment to the Note [Member] \| Event of Default [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage		16.00%
Second Amendment to the Note [Member] \| Forecast [Member]
Debt Instrument, Interest Rate, Stated Percentage													10.00%
Management [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)	13,021			30,703	8,019	75,921
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ 58,333			$ 81,886	$ 11,868	$ 245,899
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)	13,021					28,394
Share-Based Payment Arrangement, Amount Withheld for Tax Withholding Obligation	$ 58,333					$ 53,097
Director [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)			52,350
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			$ 183,750
Director [Member] \| Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)										0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Annual Grant												$ 36,750
Board of Directors Chairman [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Annual Grant												$ 73,500

LIQTECH INTERNATIONAL INC 10-Q