XML 89 R71.htm IDEA: XBRL DOCUMENT
v3.22.4

Note 7 - Acquisition-related Items (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Contingent Consideration Compensation Expense | $ 50,169 | $ 5,292
The 2022 Acquisitions [Member] |  |
Contingent Consideration Compensation Expense | $ 41,765 |

X
- Definition Represents information about the contingent consideration compensation expense. + References No definition available. + Details
Name: | cigi_ContingentConsiderationCompensationExpense
Namespace Prefix: | cigi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=cigi_The2022AcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |