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New Products New Products - Narrative (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 29, 2013	Feb. 28, 2014
Business Acquisition [Line Items]
Net product revenue									$ 36,683,762us-gaap_SalesRevenueGoodsNet	$ 31,100,698us-gaap_SalesRevenueGoodsNet	$ 47,944,031us-gaap_SalesRevenueGoodsNet
Net revenues	9,329,412us-gaap_SalesRevenueNet	9,729,047us-gaap_SalesRevenueNet	9,750,168us-gaap_SalesRevenueNet	8,093,244us-gaap_SalesRevenueNet	8,159,667us-gaap_SalesRevenueNet	6,528,575us-gaap_SalesRevenueNet	7,081,088us-gaap_SalesRevenueNet	10,258,132us-gaap_SalesRevenueNet	36,901,871us-gaap_SalesRevenueNet	32,027,462us-gaap_SalesRevenueNet	48,851,237us-gaap_SalesRevenueNet
Omeclamox-Pak
Business Acquisition [Line Items]
Additional upfront payments												4,000,000cpix_BusinessCombinationAggregateUpfrontPayments / us-gaap_BusinessAcquisitionAxis = cpix_OmeclamoxPakMember
Milestone payment not required, amount									1,000,000cpix_ProductRIghtsAgreementMilestonePayment / us-gaap_BusinessAcquisitionAxis = cpix_OmeclamoxPakMember
Net revenues									4,100,000us-gaap_SalesRevenueNet / us-gaap_BusinessAcquisitionAxis = cpix_OmeclamoxPakMember	1,000,000us-gaap_SalesRevenueNet / us-gaap_BusinessAcquisitionAxis = cpix_OmeclamoxPakMember
Vaprisol
Business Acquisition [Line Items]
Upfront payment													2,000,000cpix_BusinessCombinationUpfrontPayment / us-gaap_BusinessAcquisitionAxis = cpix_VaprisolMember
Additional upfront payments													$ 2,000,000cpix_BusinessCombinationAggregateUpfrontPayments / us-gaap_BusinessAcquisitionAxis = cpix_VaprisolMember
Minimum | Omeclamox-Pak
Business Acquisition [Line Items]
Royalty payments based on percentage over gross profits												15.00%cpix_BusinessCombinationRoyaltiesRangeofPaymentOverGrossProfitsPercentage / us-gaap_BusinessAcquisitionAxis = cpix_OmeclamoxPakMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum | Omeclamox-Pak
Business Acquisition [Line Items]
Royalty payments based on percentage over gross profits												20.00%cpix_BusinessCombinationRoyaltiesRangeofPaymentOverGrossProfitsPercentage / us-gaap_BusinessAcquisitionAxis = cpix_OmeclamoxPakMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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