Note 15 - Mortgage Banking Activities - Activity in Mortgage Loans Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Balance, beginning of period:	$ 10,045	$ 5,420	$ 8,614	$ 22,547
Origination of mortgage loans held for sale	31,446	50,111	111,026	169,542
Loans held for sale acquired	0	0	3,559	3,071
Proceeds from the sale of mortgage loans held for sale	(36,427)	(45,920)	(118,639)	(187,667)
Net gain on sale of mortgage loans held for sale	166	590	670	2,708
Balance, end of period	$ 5,230	$ 10,201	$ 5,230	$ 10,201

Amount of loan receivable held-for-sale acquired through business acquisition.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The proceeds from sale of mortgage loans held for sale at fair value.

+ References

No definition available.

+ Details

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- Definition

The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 310
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=123605502&loc=d3e21310-158488

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-URI https://asc.fasb.org/extlink&oid=123605549&loc=d3e21493-158490

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Balance Type:	credit
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- Definition

Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-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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- Definition

Amount, after allowance for bad debt, of additions to loan receivables held-for-sale that are not part of a disposal group.

+ References

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 45
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