LOANS, Non-accrual and Past Due Loans (Details)	Mar. 31, 2022 USD ($) Loan	Dec. 31, 2021 USD ($) Loan	Mar. 31, 2021 USD ($)
Non-accrual and Past Due Loans [Abstract]
Total Loans	$ 888,694,000	$ 867,901,000	$ 962,442,000
Nonaccrual	9,283,000	10,197,000
Commitments to lend additional funds to borrower whose loan was on non-accrual status	0
Current & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	877,016,000	856,564,000
30-59 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	2,395,000	587,000
60-89 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	553,000
90 Days or More Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Commercial [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	123,462,000	135,894,000	293,148,000
Nonaccrual	$ 33,000	$ 133,000
Number of nonaccrual loans | Loan	1	2
Commercial [Member] | Current & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	$ 122,021,000	$ 134,890,000
Commercial [Member] | 30-59 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	1,408,000	394,000
Commercial [Member] | 60-89 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	477,000
Commercial [Member] | 90 Days or More Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Commercial Real Estate [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	562,684,000	526,924,000	496,848,000
Nonaccrual	0	$ 555,000
Number of nonaccrual loans | Loan		1
Commercial Real Estate [Member] | Current & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	562,684,000	$ 526,337,000
Commercial Real Estate [Member] | 30-59 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	32,000
Commercial Real Estate [Member] | 60-89 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Commercial Real Estate [Member] | 90 Days or More Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Agriculture [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	99,500,000	107,183,000	79,955,000
Nonaccrual	$ 8,398,000	$ 8,712,000
Number of nonaccrual loans | Loan	3	3
Agriculture [Member] | Current & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	$ 90,802,000	$ 98,471,000
Agriculture [Member] | 30-59 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	300,000	0
Agriculture [Member] | 60-89 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Agriculture [Member] | 90 Days or More Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Residential Mortgage [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	77,761,000	76,160,000	71,112,000
Nonaccrual	$ 135,000	$ 138,000
Number of nonaccrual loans | Loan	1	1
Residential Mortgage [Member] | Current & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	$ 77,077,000	$ 75,861,000
Residential Mortgage [Member] | 30-59 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	549,000	161,000
Residential Mortgage [Member] | 60-89 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Residential Mortgage [Member] | 90 Days or More Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Residential Construction [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	7,749,000	4,482,000	2,662,000
Nonaccrual	0	0
Residential Construction [Member] | Current & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	7,661,000	4,482,000
Residential Construction [Member] | 30-59 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	88,000	0
Residential Construction [Member] | 60-89 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Residential Construction [Member] | 90 Days or More Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	0
Consumer [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	17,538,000	17,258,000	$ 18,717,000
Nonaccrual	$ 717,000	$ 659,000
Number of nonaccrual loans | Loan	4	4
Consumer [Member] | Current & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	$ 16,771,000	$ 16,523,000
Consumer [Member] | 30-59 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	50,000	0
Consumer [Member] | 60-89 Days Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	0	76,000
Consumer [Member] | 90 Days or More Past Due & Accruing [Member]
Non-accrual and Past Due Loans [Abstract]
Total Loans	$ 0	$ 0