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Revenue (Details 3) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Telecommunications Services
Deferred Revenue, Revenue Recognized	$ 26,924,000	$ 176,000	$ 1,571,000	$ 4,020,000	$ 6,234,000	$ 8,905,000	$ 6,018,000
Desktop Devices
Deferred Revenue, Revenue Recognized	$ 304,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 304,000

X

- Definition

Amount of revenue recognized that was previously reported as deferred or unearned revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsegmentsAxis=crex_TelecommunicationsServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsegmentsAxis=crex_DesktopDevicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: