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Note 17 - Convertible Redeemable Preferred Stock - Summary of Warrant Activity (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Balance, shares (in shares) | 195,160 |
Balance, weighted average exercise price (in dollars per share) | $ 1.75 | $ 1.00
Granted, shares (in shares) | 128,572 |
Granted, weighted average exercise price (in dollars per share) | $ 1.75 |
Cancelled/Expired, weighted average exercise price (in dollars per share) | $ 1.00 |
Exercised/Issued, shares (in shares) | (195,160) | (597,500)
Exercised/Issued, weighted average exercise price (in dollars per share) | $ 1.00 | $ 1.00
Balance, shares (in shares) | 128,572 | 195,160
Exercisable, shares (in shares) | 128,572 |
Exercisable at December 31, 2021 (in dollars per share) | $ 1.75 |

X
- Definition Exercise price per share of warrants or rights cancelled during period. + References No definition available. + Details
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Namespace Prefix: | ctib_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of warrant or rights that are exercisable. + References No definition available. + Details
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Namespace Prefix: | ctib_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Exercise price per share of warrants or rights exercised during period. + References No definition available. + Details
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Namespace Prefix: | ctib_
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X
- Definition Number of warrants issued during the period. + References No definition available. + Details
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Namespace Prefix: | ctib_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The exercise price per share for warrants or rights issued during the period. + References No definition available. + Details
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Namespace Prefix: | ctib_
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X
- Definition The weighted average exercise price of warrants that are exercisable. + References No definition available. + Details
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Namespace Prefix: | ctib_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 + Details
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Period Type: | instant

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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