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Note 9 - Stockholders' Equity - Warrants (Details) - shares |  | 3 Months Ended
--- | --- | ---
Aug. 17, 2021 | Mar. 31, 2022 | Mar. 31, 2021
Balance, Warrants (in shares) |  | 1,015,000 | 515,000
Common stock exchanged to prefunded warrant (in shares) | 500,000 | 0 | 0
Exercises and conversions (in shares) |  | 0 | 0
Balance, Warrants (in shares) |  | 1,015,000 | 515,000

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 Number of warrants issued in exchanged of common stock during the period. + References No definition available. + Details
Name: | liqt_ClassOfWarrantOrRightIssuedByExchangeShares
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