DERIVATIVE FINANCIAL INSTRUMENTS - (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) item	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Derivative Financial Instruments
Net impact	$ 1,000	$ 1,000	$ 1,000	$ 19,000
Asset pledged
Derivative Financial Instruments
Margin Deposit Assets	1,350,000		1,350,000		$ 1,360,000
Interest rate swap agreements
Derivative Financial Instruments
Aggregate notional amount	143,070,000		$ 143,070,000		150,028,000
Number of derivative instruments originated | item			0
Asset Derivatives, Notional Amount	71,535,000		$ 71,535,000		75,014,000
Asset Derivatives, Fair Value	1,991,000		1,991,000		2,783,000
Liability Derivatives, Notional Amount	71,535,000		71,535,000		75,014,000
Liability Derivatives, Fair Value	1,991,000		1,991,000		2,783,000
RPA Out
Derivative Financial Instruments
Asset Derivatives, Notional Amount	6,988,000		6,988,000		7,082,000
Asset Derivatives, Fair Value	8,000		8,000		11,000
Liability Derivatives, Notional Amount	0		0		0
Liability Derivatives, Fair Value	0		0		0
RPA In
Derivative Financial Instruments
Asset Derivatives, Notional Amount	0		0		0
Asset Derivatives, Fair Value	0		0		0
Liability Derivatives, Notional Amount	9,958,000		9,958,000		10,000,000
Liability Derivatives, Fair Value	9,000		9,000		$ 13,000
Derivatives not designated as hedging instruments | Interest rate swap agreements
Derivative Financial Instruments
Interest rate swap	$ 0		$ 0