SUBORDINATED NOTES - Narrative (Details) - USD ($) $ in Millions		1 Months Ended
	Jul. 01, 2024	Jun. 30, 2006	Nov. 30, 2004	Mar. 31, 2026	Dec. 31, 2025
Notes Payable, Other Payables | Subordinated notes
Debt Instrument [Line Items]
Maturities of subordinated notes and trust preferred debt				$ 31.0
Codorus Valley Unsecured Subordinated Notes | Subordinated notes
Debt Instrument [Line Items]
Debt instrument redemption integral multiples amount	$ 10.0
Debt instrument redemption percentage prior to maturity date	100.00%
Fixed rate of interest	4.50%
Debt instrument basis spread	4.04%
Debt instrument interest rate				7.72%	8.06%
Fair value of the debt	$ 28.6
Unamortized discount	2.4
Unearned discount				$ (1.7)	$ (1.8)
Codorus Valley Junior Subordinated Trust Preferred Debt | Subordinated notes | CVB Statutory Trust No. II
Debt Instrument [Line Items]
Debt instrument basis spread		0.26161%
Pooled trust preferred debt issuance		$ 7.2
Debt instrument, interest rate, effective percentage		1.54%
Codorus Valley Junior Subordinated Trust Preferred Debt | Subordinated notes | CVB Statutory Trust No. I
Debt Instrument [Line Items]
Debt instrument basis spread			0.26161%
Pooled trust preferred debt issuance			$ 3.1
Debt instrument, interest rate, effective percentage			2.02%
Codorus Valley Junior Subordinated Trust Preferred Debt | Junior Subordinated Debt
Debt Instrument [Line Items]
Fair value of the debt	7.6
Unamortized discount	2.7
Debt instrument face amount	$ 10.3