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Note 13. Employee Benefit Plan (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Note 13. Employee Benefit Plan Details Narrative |  |
401(k) Contribution Amount | $ 20 | $ 21
Employer Discretionary Contribution Amount | $ 5 | $ 4

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- References No definition available. + Details
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Namespace Prefix: | ISDR_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration