CAPITAL AND REGULATORY MATTERS - Actual Capital Amounts and Ratios (Details) $ in Thousands	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Consolidated [Member]
Total Capital to Risk Weighted Assets:
Actual, Amount	$ 706,237	$ 622,485
Actual, Ratio	0.1654	0.1726
Minimum Required Under BASEL III Fully Phased In, Amount	$ 448,427	$ 378,645
Minimum Required Under BASEL III Fully Phased In, Ratio	0.105	0.105
Tier 1 Capital to Risk Weighted Assets:
Actual, Amount	$ 647,574	$ 566,107
Actual, Ratio	0.1516	0.157
Minimum Required Under BASEL III Fully Phased In, Amount	$ 363,012	$ 306,522
Minimum Required Under BASEL III Fully Phased In, Ratio	0.085	0.085
Common Equity Tier 1 to Risk Weighted Assets:
Actual, Amount	$ 602,574	$ 521,107
Actual, Ratio	0.1411	0.1445
Minimum Required Under BASEL III Fully Phased In, Amount	$ 298,951	$ 252,430
Minimum Required Under BASEL III Fully Phased In, Ratio	0.07	0.07
Tier 1 Capital to Average Assets:
Actual, Amount	$ 647,574	$ 566,107
Actual, Ratio	0.1221	0.1253
Minimum Required Under BASEL III Fully Phased In, Amount	$ 215,000	$ 181,591
Minimum Required Under BASEL III Fully Phased In, Ratio	0.04	0.04
City Bank [Member]
Total Capital to Risk Weighted Assets:
Actual, Amount	$ 619,057	$ 537,444
Actual, Ratio	0.145	0.1491
Minimum Required Under BASEL III Fully Phased In, Amount	$ 448,169	$ 378,576
Minimum Required Under BASEL III Fully Phased In, Ratio	0.105	0.105
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 426,794	$ 360,549
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.10	0.10
Tier 1 Capital to Risk Weighted Assets:
Actual, Amount	$ 571,674	$ 492,355
Actual, Ratio	0.1339	0.1366
Minimum Required Under BASEL III Fully Phased In, Amount	$ 362,803	$ 306,466
Minimum Required Under BASEL III Fully Phased In, Ratio	0.085	0.085
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 341,435	$ 288,439
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.08	0.08
Common Equity Tier 1 to Risk Weighted Assets:
Actual, Amount	$ 571,674	$ 492,355
Actual, Ratio	0.1339	0.1366
Minimum Required Under BASEL III Fully Phased In, Amount	$ 298,779	$ 252,384
Minimum Required Under BASEL III Fully Phased In, Ratio	0.07	0.07
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 277,416	$ 234,357
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.065	0.065
Tier 1 Capital to Average Assets:
Actual, Amount	$ 571,674	$ 492,355
Actual, Ratio	0.1079	0.109
Minimum Required Under BASEL III Fully Phased In, Amount	$ 214,891	$ 181,512
Minimum Required Under BASEL III Fully Phased In, Ratio	0.04	0.04
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 264,979	$ 225,868
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.05	0.05