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Note 4 - Loans and the Allowance for Credit Losses - Loans Receivable on Nonaccrual Status (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Nonaccrual loans with ACL | $ 34,336 | $ 45,347
Nonaccrual loans without ACL | 10,118 | 16,353
Total Nonaccrual loans | 44,454 | 61,700
Commercial Portfolio Segment [Member] |  |
Nonaccrual loans with ACL | 23,512 | 28,746
Nonaccrual loans without ACL | 1,745 | 1,316
Total Nonaccrual loans | 25,257 | 30,062
Commercial Real Estate Portfolio Segment [Member] |  |
Nonaccrual loans with ACL | 10,220 | 15,362
Nonaccrual loans without ACL | 6,597 | 10,031
Total Nonaccrual loans | 16,817 | 25,393
Residential Portfolio Segment [Member] |  |
Nonaccrual loans with ACL | 604 | 1,239
Nonaccrual loans without ACL | 1,776 | 1,856
Total Nonaccrual loans | 2,380 | 3,095
Commercial Construction Portfolio Segment [Member] |  |
Nonaccrual loans with ACL |  | 0
Nonaccrual loans without ACL |  | 3,150
Total Nonaccrual loans | $ 0 | $ 3,150

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