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Leases (Details)	9 Months Ended
	Sep. 30, 2022
Leases (Textual)
Lease expiration period, description	Our leases have original lease periods expiring between 2022 and 2027.

X

- Definition

Description of lease expiration period.

+ References

No definition available.

+ Details

Name:	crex_LeaseExpirationPeriodDescription
Namespace Prefix:	crex_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_LeasesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration