SUBORDINATED NOTES - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended		3 Months Ended		9 Months Ended
	Jul. 01, 2024	Jun. 30, 2006	Nov. 30, 2004	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Debt Instrument [Line Items]
Debt issuance costs				$ 0		$ 0		$ (353)
Debt issuance cost amortization period						10 years	10 years
Amortization of debt issuance costs					$ (23)	$ (335)	$ (58)
Subordinated notes
Debt Instrument [Line Items]
Debt instrument interest rate				7.72%		7.72%
Subordinated notes | Codorus Valley
Debt Instrument [Line Items]
Fixed rate of interest	4.50%
Debt instrument basis spread	4.04%
Debt instrument face amount	$ 31,000
Debt instrument redemption integral multiples amount	$ 10,000
Debt instrument redemption percentage prior to maturity date	100.00%
Subordinated notes | CVB Statutory Trust No. II
Debt Instrument [Line Items]
Debt instrument basis spread		0.26161%
Pooled trust preferred debt issuance		$ 7,200
Debt instrument, interest rate, effective percentage		1.54%
Subordinated notes | Codorus Valley
Debt Instrument [Line Items]
Fair value of the debt	$ 28,600
Unamortized discount	2,400
Subordinated notes | Codorus Valley | CVB Statutory Trust No. I
Debt Instrument [Line Items]
Debt instrument basis spread			0.26161%
Pooled trust preferred debt issuance			$ 3,100
Debt instrument, interest rate, effective percentage			2.02%
Trust preferred debt, cost, percentage						6.33%	7.42%
Subordinated notes | Notes Payable, Other Payables
Debt Instrument [Line Items]
Unsecured subordinated notes payable outstanding				$ 31,000		$ 31,000		$ 63,100
Subordinated Notes, 2028
Debt Instrument [Line Items]
Debt redeemed face amount				$ 32,500		$ 32,500
Fixed rate of interest				6.00%		6.00%
Amortization of debt issuance costs				$ (298)
Subordinated Notes, 2028 | Minimum
Debt Instrument [Line Items]
Debt instrument basis spread						0.26161%
Subordinated Notes, 2028 | Maximum
Debt Instrument [Line Items]
Debt instrument basis spread						3.16%
Junior Subordinated Debt | Codorus Valley
Debt Instrument [Line Items]
Debt instrument face amount	10,300
Fair value of the debt	7,600
Unamortized discount	$ 2,700