Retained Earnings (Details)	1 Months Ended	12 Months Ended
Mar. 31, 2012	Dec. 31, 2025
Retained Earnings [Abstract]
Percentage of gross risk bearing assets	1.50%
Percentage of net income approval		10.00%

Represents percentage of gross risk-bearing assets.

No definition available.

Name:	cnf_PercentageOfGrossRiskBearingAssets
Namespace Prefix:	cnf_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration