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SUMMARY OF FINANCE AND OPERATING LEASE LIABILITIES (Details) - USD ($) | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Lease liabilities - current, Finance leases |  | $ 20,061
Lease liabilities - current, Operating leases | 830,791 | 700,975
Lease liabilities - current | 830,791 | 721,036
Lease liabilities - net of current portion, Finance leases |  |
Lease liabilities - net of current portion, Operating leases | 2,017,408 | 2,027,406
Lease liabilities - net of current portion | $ 2,017,408 | 2,027,406
Lease Liabilities [Member] |  |
Lease liabilities - net of current portion, Finance leases |  |

X
- Definition Finance Lease Liabilities Current. + References No definition available. + Details
Name: | CETX_FinanceLeaseLiabilitiesCurrent
Namespace Prefix: | CETX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Finance Lease Liabilities Noncurrent. + References No definition available. + Details
Name: | CETX_FinanceLeaseLiabilitiesNoncurrent
Namespace Prefix: | CETX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lease liabilities, current. + References No definition available. + Details
Name: | CETX_LeaseLiabilitiesCurrent
Namespace Prefix: | CETX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-term lease liabilities. + References No definition available. + Details
Name: | CETX_LongtermLeaseLiabilities
Namespace Prefix: | CETX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Operating Lease Liabilities Current. + References No definition available. + Details
Name: | CETX_OperatingLeaseLiabilitiesCurrent
Namespace Prefix: | CETX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Operating Lease Liabilities Noncurrent. + References No definition available. + Details
Name: | CETX_OperatingLeaseLiabilitiesNoncurrent
Namespace Prefix: | CETX_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=CETX_LeaseLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |