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Note 7 - Loans Receivable and Credit Disclosures - Credit Risk Profile by Internally Assigned Grade (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Balance March 31, 2023	$ 1,240,314	$ 1,241,708
Pass [Member]
Balance March 31, 2023		794,529
Watch [Member]
Balance March 31, 2023		109,282
Special Mention [Member]
Balance March 31, 2023		116
Substandard [Member]
Balance March 31, 2023		22,903
Substandard Impaired [Member]
Balance March 31, 2023		13,560
Internal Noninvestment Grade [Member]
Balance March 31, 2023		940,390
Construction Real Estate [Member]
Balance March 31, 2023	59,756	51,253
Construction Real Estate [Member] | Pass [Member]
Balance March 31, 2023		51,253
Construction Real Estate [Member] | Watch [Member]
Balance March 31, 2023		0
Construction Real Estate [Member] | Special Mention [Member]
Balance March 31, 2023		0
Construction Real Estate [Member] | Substandard [Member]
Balance March 31, 2023		0
Construction Real Estate [Member] | Substandard Impaired [Member]
Balance March 31, 2023		0
Construction Real Estate [Member] | Internal Noninvestment Grade [Member]
Balance March 31, 2023		51,253
Multifamily [Member]
Balance March 31, 2023	193,566	185,784
Multifamily [Member] | Pass [Member]
Balance March 31, 2023		174,048
Multifamily [Member] | Watch [Member]
Balance March 31, 2023		9,344
Multifamily [Member] | Special Mention [Member]
Balance March 31, 2023		0
Multifamily [Member] | Substandard [Member]
Balance March 31, 2023		2,392
Multifamily [Member] | Substandard Impaired [Member]
Balance March 31, 2023		0
Multifamily [Member] | Internal Noninvestment Grade [Member]
Balance March 31, 2023		185,784
Commercial Real Estate Portfolio Segment [Member]
Balance March 31, 2023	350,999	353,285
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Balance March 31, 2023		264,898
Commercial Real Estate Portfolio Segment [Member] | Watch [Member]
Balance March 31, 2023		62,076
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Balance March 31, 2023		0
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Balance March 31, 2023		13,458
Commercial Real Estate Portfolio Segment [Member] | Substandard Impaired [Member]
Balance March 31, 2023		12,853
Commercial Real Estate Portfolio Segment [Member] | Internal Noninvestment Grade [Member]
Balance March 31, 2023		353,285
Agriculture Real Estate [Member]
Balance March 31, 2023	158,337	159,448
Agriculture Real Estate [Member] | Pass [Member]
Balance March 31, 2023		136,043
Agriculture Real Estate [Member] | Watch [Member]
Balance March 31, 2023		18,324
Agriculture Real Estate [Member] | Special Mention [Member]
Balance March 31, 2023		0
Agriculture Real Estate [Member] | Substandard [Member]
Balance March 31, 2023		4,916
Agriculture Real Estate [Member] | Substandard Impaired [Member]
Balance March 31, 2023		165
Agriculture Real Estate [Member] | Internal Noninvestment Grade [Member]
Balance March 31, 2023		159,448
Commercial Portfolio Segment [Member]
Balance March 31, 2023	82,345	77,265
Commercial Portfolio Segment [Member] | Pass [Member]
Balance March 31, 2023		69,872
Commercial Portfolio Segment [Member] | Watch [Member]
Balance March 31, 2023		5,392
Commercial Portfolio Segment [Member] | Special Mention [Member]
Balance March 31, 2023		116
Commercial Portfolio Segment [Member] | Substandard [Member]
Balance March 31, 2023		1,685
Commercial Portfolio Segment [Member] | Substandard Impaired [Member]
Balance March 31, 2023		200
Commercial Portfolio Segment [Member] | Internal Noninvestment Grade [Member]
Balance March 31, 2023		77,265
Agriculture [Member]
Balance March 31, 2023	$ 92,402	113,355
Agriculture [Member] | Pass [Member]
Balance March 31, 2023		98,415
Agriculture [Member] | Watch [Member]
Balance March 31, 2023		14,146
Agriculture [Member] | Special Mention [Member]
Balance March 31, 2023		0
Agriculture [Member] | Substandard [Member]
Balance March 31, 2023		452
Agriculture [Member] | Substandard Impaired [Member]
Balance March 31, 2023		342
Agriculture [Member] | Internal Noninvestment Grade [Member]
Balance March 31, 2023		$ 113,355

X

- Definition

Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

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