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Note 12 - Stock-based Compensation - Summary of Share Vesting Activity (Details) - New Options [Member] - Stock Incentive Plan 2014 [Member] | Jun. 15, 2022 shares
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Vesting at Share Price of 2.00 [Member] |
Percentage of Shares Vested | 5.00%
Vesting at Share Price Target of $3.00 [Member] |
Percentage of Shares Vested | 10.00%
Vesting at Share Price Target of $4.00 [Member] |
Percentage of Shares Vested | 15.00%
Vesting at Share Price Target of $5.00 [Member] |
Percentage of Shares Vested | 20.00%
Vesting at Share Price Target of $6.00 [Member] |
Percentage of Shares Vested | 25.00%
Vesting at Guaranteed Price [Member] |
Percentage of Shares Vested | 25.00%
Chief Executive Officer [Member] |
Options expected to vest (in shares) | 333,334
Chief Executive Officer [Member] | Vesting at Share Price of 2.00 [Member] |
Options expected to vest (in shares) | 16,667
Chief Executive Officer [Member] | Vesting at Share Price Target of $3.00 [Member] |
Options expected to vest (in shares) | 33,334
Chief Executive Officer [Member] | Vesting at Share Price Target of $4.00 [Member] |
Options expected to vest (in shares) | 50,000
Chief Executive Officer [Member] | Vesting at Share Price Target of $5.00 [Member] |
Options expected to vest (in shares) | 66,667
Chief Executive Officer [Member] | Vesting at Share Price Target of $6.00 [Member] |
Options expected to vest (in shares) | 83,334
Chief Executive Officer [Member] | Vesting at Guaranteed Price [Member] |
Options expected to vest (in shares) | 83,334
Chief Financial Officer [Member] |
Options expected to vest (in shares) | 200,000
Chief Financial Officer [Member] | Vesting at Share Price of 2.00 [Member] |
Options expected to vest (in shares) | 10,000
Chief Financial Officer [Member] | Vesting at Share Price Target of $3.00 [Member] |
Options expected to vest (in shares) | 20,000
Chief Financial Officer [Member] | Vesting at Share Price Target of $4.00 [Member] |
Options expected to vest (in shares) | 30,000
Chief Financial Officer [Member] | Vesting at Share Price Target of $5.00 [Member] |
Options expected to vest (in shares) | 40,000
Chief Financial Officer [Member] | Vesting at Share Price Target of $6.00 [Member] |
Options expected to vest (in shares) | 50,000
Chief Financial Officer [Member] | Vesting at Guaranteed Price [Member] |
Options expected to vest (in shares) | 50,000

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- Definition Number of option shares eligible to vest under share-based compensation arrangement. + References No definition available. + Details
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Namespace Prefix: | crex_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of vesting of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Details
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Data Type: | na
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- Details
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- Details
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- Details
Name: | us-gaap_VestingAxis=crex_VestingAtSharePriceTargetOf300Member
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- Details
Name: | us-gaap_VestingAxis=crex_VestingAtSharePriceTargetOf400Member
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Data Type: | na
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- Details
Name: | us-gaap_VestingAxis=crex_VestingAtSharePriceTargetOf500Member
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Data Type: | na
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- Details
Name: | us-gaap_VestingAxis=crex_VestingAtSharePriceTargetOf600Member
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Data Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
Name: | srt_TitleOfIndividualAxis=srt_ChiefFinancialOfficerMember
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