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Note 4 - Revenue Recognition (Details Textual)	6 Months Ended
	Jun. 30, 2024
Software Licensing and Delivery [Member] | Minimum [Member]
Revenue Recognition, Contract Term (Month)	12 months
Software Licensing and Delivery [Member] | Maximum [Member]
Revenue Recognition, Contract Term (Month)	36 months
Support Service [Member] | Minimum [Member]
Revenue Recognition, Contract Term (Month)	12 months
Support Service [Member] | Maximum [Member]
Revenue Recognition, Contract Term (Month)	36 months
Media [Member] | Minimum [Member]
Revenue Recognition, Commission Percentage on Revenue	30.00%
Media [Member] | Maximum [Member]
Revenue Recognition, Contract Term (Month)	8 years
Revenue Recognition, Commission Percentage on Revenue	40.00%

X

- Definition

Represents the commission percentage from revenue contracts recognized for the period.

+ References

No definition available.

+ Details

Name:	crex_RevenueRecognitionCommissionPercentageOnRevenue
Namespace Prefix:	crex_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents contract term under revenue recognition.

+ References

No definition available.

+ Details

Name:	crex_RevenueRecognitionContractTerm
Namespace Prefix:	crex_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_ProductOrServiceAxis=crex_SoftwareLicensingAndDeliveryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=crex_SupportServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=crex_MediaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: