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Property and Equipment (Depreciation Expense) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation, including amortization related to leasehold improvements	$ 213,237	$ 211,532	$ 202,868

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- Definition

Depreciation, Including Amortization Related to Leasehold Improvements

+ References

No definition available.

+ Details

Name:	cpix_DepreciationIncludingAmortizationRelatedToLeaseholdImprovements
Namespace Prefix:	cpix_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration