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v3.20.1

Revenue Recognition (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($)
Hardware | $ 8,229
Total Services | 23,369
Total Hardware and Services | 31,598
Installation Services [Member] |
Total Services | 7,500
Software Development Services [Member] |
Total Services | 9,303
Managed Services [Member] |
Total Services | $ 6,566

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Namespace Prefix: | crex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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Namespace Prefix: | crex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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Namespace Prefix: | crex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

X
- Details
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Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |