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v3.21.1

Note 9 - Notes Payable and Capital Leases - Leverage Ratios (Details) | 3 Months Ended
--- | ---
Sep. 30, 2019 | Jun. 30, 2019
Maximum [Member] |  |
Leverage ratio | 2.75 | 3

X
- Definition This element represents leverage ratio that is the how much capital comes in the form of debt (loans). + References No definition available. + Details
Name: | ctib_LeverageRatio
Namespace Prefix: | ctib_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |