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Note 7 - Loans Receivable and Credit Disclosures - Loans Receivable Impairment Analysis (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Individually evaluated for impairment		$ 11,199	$ 12,312
Collectively evaluated for impairment		1,145,479	1,148,355
Balance		1,156,678	1,160,667
Construction Real Estate [Member]
Individually evaluated for impairment		0	0
Collectively evaluated for impairment		41,151	42,638
Balance		41,151	42,638
Family Residential Real Estate 1-4 [Member]
Individually evaluated for impairment		722	980
Collectively evaluated for impairment		260,968	245,765
Balance		261,690	246,745
Commercial Real Estate Portfolio Segment [Member]
Individually evaluated for impairment		9,713	9,792
Collectively evaluated for impairment		505,537	505,575
Balance		515,250	515,367
Agriculture Real Estate [Member]
Individually evaluated for impairment		171	546
Collectively evaluated for impairment		158,726	152,911
Balance		158,897	153,457
Commercial Portfolio Segment [Member]
Individually evaluated for impairment		241	330
Collectively evaluated for impairment		71,824	75,152
Balance	[1]	72,065	75,482
Agriculture [Member]
Individually evaluated for impairment		330	637
Collectively evaluated for impairment		91,599	111,244
Balance		91,929	111,881
Consumer and Other [Member]
Individually evaluated for impairment		22	27
Collectively evaluated for impairment		15,674	15,070
Balance		$ 15,696	$ 15,097
[1] Commercial loan portfolio includes $0.3 million and $6.0 million of Paycheck Protection Program ("PPP") loans as of March 31, 2022 and December 31, 2021, respectively.

X

- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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