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Note 4. Goodwill and Other Intangible Assets (Details 2) (USD $)
12 Months Ended
Dec. 31, 2014
Accesswire  
Asset Amount $ 423,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= ISDR_AccesswireMember
PrecisionIR  
Asset Amount 3,300,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= ISDR_PrecisionIRMember
Client relationships | Accesswire  
Asset Amount 242,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= ISDR_AccesswireMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Useful Life (years) 7 years
Client relationships | PrecisionIR  
Asset Amount 1,480,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= ISDR_PrecisionIRMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Useful Life (years) 7 years
Software | Accesswire  
Asset Amount 181,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= ISDR_AccesswireMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_SoftwareLicenseArrangementMember
Useful Life (years) 5 years
Software | PrecisionIR  
Asset Amount 550,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= ISDR_PrecisionIRMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_SoftwareLicenseArrangementMember
Useful Life (years) 3 years
Customer list | PrecisionIR  
Asset Amount $ 1,270,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= ISDR_PrecisionIRMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember
Useful Life (years) 3 years