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9. STOCK COMPENSATION RSU (Details) - Restricted Stock Awards [Member] - $ / shares | 12 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Number of unvested shares, Beginning | 468,000 | 604,000
Vested shares | (156,000) | (136,000)
Number of unvested shares, Ending | 312,000 | 468,000
Weighted Average Grant Date Fair Value, Ending | $ 13.75 | $ 13.75

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- Definition Custom Element. + References No definition available. + Details
Name: | CVM_NumberOfUnvestedSharesBeginning
Namespace Prefix: | CVM_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | CVM_NumberOfUnvestedSharesEnding
Namespace Prefix: | CVM_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | CVM_VestedShares
Namespace Prefix: | CVM_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | CVM_WeightedAverageGrantDateFairValue
Namespace Prefix: | CVM_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_AwardTypeAxis=CVM_RestrictedStockAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |