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Commitments and Contingencies (Legal Matters, Narrative) (Details) (Product, Acetadote, Patent Infringement) | 1 Months Ended
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Apr. 30, 2012 company lawsuit
Product, Acetadote | Patent Infringement |
Loss Contingencies [Line Items] |
Number of lawsuits filed as plaintiff | 5 cpix_NumberOfLawsuitsFiledAsPlaintiff / us-gaap_LossContingenciesByNatureOfContingencyAxis = cpix_PatentInfringementMember / us-gaap_ProductOrServiceAxis = cpix_AcetadoteMember
Number of companies for which litigation settlement exists | 2 cpix_NumberOfCompaniesForWhichLitigationSettlementExists / us-gaap_LossContingenciesByNatureOfContingencyAxis = cpix_PatentInfringementMember / us-gaap_ProductOrServiceAxis = cpix_AcetadoteMember

X
- Definition Number of companies for which litigation settlement exists + References No definition available. + Details
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Namespace Prefix: | cpix_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of lawsuits filed as plaintiff + References No definition available. + Details
Name: | cpix_NumberOfLawsuitsFiledAsPlaintiff
Namespace Prefix: | cpix_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration