FAIR VALUE DISCLOSURES, Assets (Liabilities) Measured at Fair Value on Recurring and Non-Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Securities available for sale [Abstract]
Securities available for sale	$ 591,031		$ 622,762
Mortgage servicing rights	26,426	$ 26,843	26,569	$ 26,658	$ 25,795	$ 27,474
State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	176,032		180,575
Residential Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	278,466		300,704
Commercial Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	40,705		41,748
Commercial Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	69,118		71,930
Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	11,005		10,765
Recurring [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	15,705		17,040
Loans held for sale (mandatory)	12,252		6,615
Mortgage servicing rights	26,426		26,569
Asset derivatives	$ 18,228		$ 17,230
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets		Other assets
Liability derivatives	$ (116)		$ (432)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities		Accrued expenses and other liabilities
Recurring [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	$ 176,032		$ 180,575
Recurring [Member] | Residential Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	278,466		300,704
Recurring [Member] | Commercial Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	40,705		41,748
Recurring [Member] | Commercial Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	69,118		71,930
Recurring [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	11,005		10,765
Recurring [Member] | Level 1 [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	0		0
Loans held for sale (mandatory)	0		0
Mortgage servicing rights	0		0
Asset derivatives	0		0
Liability derivatives	0		0
Recurring [Member] | Level 1 [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 1 [Member] | Residential Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 1 [Member] | Commercial Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 1 [Member] | Commercial Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 1 [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 2 [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	15,705		17,040
Loans held for sale (mandatory)	12,252		6,615
Mortgage servicing rights	0		0
Asset derivatives	18,228		17,230
Liability derivatives	(116)		(432)
Recurring [Member] | Level 2 [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	176,032		180,575
Recurring [Member] | Level 2 [Member] | Residential Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	278,466		300,704
Recurring [Member] | Level 2 [Member] | Commercial Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	40,705		41,748
Recurring [Member] | Level 2 [Member] | Commercial Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	69,118		71,930
Recurring [Member] | Level 2 [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	11,005		10,765
Recurring [Member] | Level 3 [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	0		0
Loans held for sale (mandatory)	0		0
Mortgage servicing rights	26,426		26,569
Asset derivatives	0		0
Liability derivatives	0		0
Recurring [Member] | Level 3 [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 3 [Member] | Residential Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 3 [Member] | Commercial Mortgage-backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 3 [Member] | Commercial Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Recurring [Member] | Level 3 [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0		0
Non-recurring [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Loans held for investment	19,648		1,482
Non-recurring [Member] | Level 1 [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Loans held for investment	0		0
Non-recurring [Member] | Level 2 [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Loans held for investment	0		0
Non-recurring [Member] | Level 3 [Member]
Assets measured at fair value on a non-recurring basis [Abstract]
Loans held for investment	$ 19,648		$ 1,482