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Note 10 - Business Combination - Identifiable Intangible Assets (Details) - Reflect Systems, Inc. [Member] $ in Thousands | 3 Months Ended
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Feb. 17, 2022 USD ($)
Valuation | $ 17,160
Trade Names [Member] |
Valuation | $ 960
Amortization period (Year) | 5 years
Developed Technology Rights [Member] |
Valuation | $ 5,130
Amortization period (Year) | 10 years
Noncompete Agreements [Member] |
Valuation | $ 30
Amortization period (Year) | 2 years
Customer Relationships [Member] |
Valuation | $ 11,040
Amortization period (Year) | 10 years

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=crex_ReflectSystemsIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Data Type: | na
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- Details
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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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Balance Type: |
Period Type: |