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Note 7. Concentration of revenue as a percentage of total revenue (Details)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Percentage of revenue from various revenue streams 100.00%us-gaap_ConcentrationRiskPercentage1 100.00%us-gaap_ConcentrationRiskPercentage1
Disclosure management    
Percentage of revenue from various revenue streams 23.80%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= ISDR_DisclosureManagementMember		 27.10%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= ISDR_DisclosureManagementMember
Shareholder communications    
Percentage of revenue from various revenue streams 67.80%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= ISDR_ShareholderCommunicationsMember		 65.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= ISDR_ShareholderCommunicationsMember
Platform & technology    
Percentage of revenue from various revenue streams 8.40%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= ISDR_SoftwareLicensingMember		 7.90%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= ISDR_SoftwareLicensingMember