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v3.21.2

Fair Value Measurements (Details 3) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Fair Value Measurements |  |
Beginning balance | $ 0 | $ 175
Additions | 746 |
Cash payments | 0 | (54)
Adjustment | 0 | (121)
Ending balance | $ 746 | $ 0

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- References No definition available. + Details
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Namespace Prefix: | crex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | crex_FairValueLevelThree
Namespace Prefix: | crex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | crex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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