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Note 9 - Stockholders' Equity - Warrants (Details) - shares | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Balance, Warrants (in shares) | 4,490,104 | 126,875
Warrants issued in connection with public offering and private placement (in shares) | 0 | 4,363,229
Exercises and conversions (in shares) | 0 | 0
Balance, Warrants (in shares) | 4,490,104 | 4,490,104

X
- Definition The number of warrants or rights exercised or converted during period. + References No definition available. + Details
Name: | liqt_ClassOfWarrantOrRightExercisedOrConvertedDuringPeriod
Namespace Prefix: | liqt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of warrants or rights issued during period. + References No definition available. + Details
Name: | liqt_ClassOfWarrantOrRightIssuedDuringPeriod
Namespace Prefix: | liqt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant