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Note 3 - Loans and Allowance for Credit Losses (Details Textual) - USD ($)

12 Months Ended

Dec. 31, 2021

Dec. 31, 2022

Jan. 01, 2022

Dec. 31, 2020

Aug. 08, 2020

Dec. 31, 2019

Financing Receivable, before Allowance for Credit Loss, Total

$ 3,453,459,000

$ 3,916,619,000

Financing Receivable, Accruing Trouble Debt Restructurings, Interest Income

1,500,000

Interest Lost on Nonaccrual Loans

100,000

Maximum [Member]

Interest Lost on Nonaccrual Loans

100,000

Collateral Dependent Loans [Member]

Financing Receivable, before Allowance for Credit Loss, Total

7,700,000

SBA, CARES Act, Paycheck Protection Program [Member]

Financing Receivable, before Allowance for Credit Loss, Total

$ 554,000,000

Commercial Portfolio Segment [Member]

Financing Receivable, before Allowance for Credit Loss, Total

2,950,424,000

3,131,830,000

Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]

Financing Receivable, before Allowance for Credit Loss, Total

^[1]

1,137,419,000

1,185,083,000

Financing Receivable, Troubled Debt Restructuring

4,973,000

8,672,000

$ 6,414,000

$ 8,587,000

Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Grades 1-4 [Member]

Financing Receivable, before Allowance for Credit Loss, Total

^[2]

729,224,000

719,583,000

Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | SBA, CARES Act, Paycheck Protection Program [Member]

Financing Receivable, before Allowance for Credit Loss, Total

40,100,000

900,000

365,000,000

Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | SBA, CARES Act, Paycheck Protection Program [Member] | Grades 1-4 [Member]

Financing Receivable, before Allowance for Credit Loss, Total

40,100,000

900,000

Retail Portfolio Segment [Member]

Financing Receivable, before Allowance for Credit Loss, Total

503,035,000

784,789,000

Retail Portfolio Segment [Member] | Home Equity Loan [Member]

Financing Receivable, before Allowance for Credit Loss, Total

29,500,000

37,400,000

Retail Portfolio Segment [Member] | Other Consumer Loans [Member]

Financing Receivable, before Allowance for Credit Loss, Total

^[3]

60,488,000

29,753,000

Financing Receivable, Troubled Debt Restructuring

1,202,000

1,000

Retail Portfolio Segment [Member] | Other Consumer Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]

Financing Receivable, Troubled Debt Restructuring

$ (1,200,000)

Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]

Financing Receivable, before Allowance for Credit Loss, Total

442,547,000

755,036,000

Financing Receivable, Troubled Debt Restructuring

$ 627,000

$ 2,736,000

$ 806,000

$ 724,000

Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]

Financing Receivable, Troubled Debt Restructuring

$ 1,200,000

[1]	For December 31, 2022, and December 31, 2021, includes $0.9 million and $40.1 million in loans originated under the Paycheck Protection Program, respectively.
[2]	Included in Commercial and Industrial Loans Grades 1 – 4 are $40.1 million of loans originated under the Paycheck Protection Program.
[3]	In conjunction with the adoption of the CECL methodology effective January 1, 2022, home equity lines of credit were reclassified to 1-4 family mortgage loans from other consumer loans. Home equity lines of credit totaled $37.4 million and $29.5 million as of December 31, 2022, and 2021, respectively.

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+ References

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