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Debt (Line of Credit) (Details) (USD $) | 1 Months Ended | 0 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 31, 2011 | Jun. 26, 2014 | Dec. 31, 2013 | Dec. 31, 2014
Credit Facility, Line of Credit | Credit Facility, Fifth Amended and Restated Loan Agreement, the Agreement, August 2011 [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt instrument, interest rate at end of period |  |  | 2.17%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_CreditFacilityAxis = us-gaap_DomesticLineOfCreditMember / cpix_CreditFacilityByAmendmentDateAxis = cpix_CreditFacilityFifthAmendedAndRestatedLoanAgreementAgreementAugust2011Member |
Line of credit, unused capacity, commitment fee percentage | 0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_DomesticLineOfCreditMember / cpix_CreditFacilityByAmendmentDateAxis = cpix_CreditFacilityFifthAmendedAndRestatedLoanAgreementAgreementAugust2011Member |  |  |
Line of Credit [Member] | Credit Facility, Fifth Amended and Restated Loan Agreement, the Agreement, August 2011 [Member] | Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of credit, maximum borrowing capacity | 10,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = cpix_CreditFacilityFifthAmendedAndRestatedLoanAgreementAgreementAugust2011Member |  |  |
SunTrust Bank [Member] | Line of Credit [Member] | Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of credit, maximum borrowing capacity |  | 12,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = cpix_SunTrustBankMember |  |
Line of credit, maximum borrowing capacity upon satisfaction of certain conditions |  | 20,000,000 cpix_LineOfCreditFacilityMaximumBorrowingCapacityUponSatisfactionOfCertainConditions / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = cpix_SunTrustBankMember |  |
Line of Credit Facility, Expiration Period |  | 3 years |  |
Line of credit, unused capacity, commitment fee percentage |  | 0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = cpix_SunTrustBankMember |  |
Deferred finance costs |  |  |  | $ 100,000 us-gaap_DeferredFinanceCostsOwnshareLendingArrangementIssuanceCostsNet / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = cpix_SunTrustBankMember
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum |  | 1.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = cpix_SunTrustBankMember |  |
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum |  | 2.85%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = cpix_SunTrustBankMember |  |

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- Definition Line of Credit Facility, Maximum Borrowing Capacity Upon Satisfaction of Certain Conditions + References No definition available. + Details
Name: | cpix_LineOfCreditFacilityMaximumBorrowingCapacityUponSatisfactionOfCertainConditions
Namespace Prefix: | cpix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | instant

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- Definition Maximum contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Minimum contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of issuance costs recognized in a share-lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing, after deduction of accumulated amortization or the effects of subsequent adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=7656903&loc=SL6757479-112611 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityExpirationPeriod
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Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Balance Type: | na
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |