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Significant Customers/Vendors (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Significant Customersvendors [Abstract]
Accounts receivable percentage	62.50%	41.10%
Revenue percentage	70.00%	40.00%
Outstanding accounts payable percentage	57.90%	69.10%

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- Definition

The percentage of receivables method is used to derive the bad debt percentage that a business expects to experience. The technique is used to populate the allowance for doubtful accounts, which is a contra account that offsets the accounts receivable asset.

+ References

No definition available.

+ Details

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Period Type:	duration

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- Definition

Accounts payable (AP) is the amount owed for the purchase of goods or services at a specific date. Accounts payable is recorded at the time an invoice is approved for payment and recorded in the General Ledger (or AP sub-ledger) as an outstanding, or open, liability because it has not been paid.

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No definition available.

+ Details

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Namespace Prefix:	crex_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	crex_
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- Definition

Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045

+ Details

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