Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans - Loans by Performance Status (Details)

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Note 5 - Loans - Loans by Performance Status (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Loans and Leases Receivable, Gross, Total $ 9,898,957 $ 9,532,934
Performing Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total 9,879,533 9,520,837
Nonperforming Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total 19,424 12,097
Commercial Real Estate Portfolio Segment [Member]    
Loans and Leases Receivable, Gross, Total 2,955,927 2,984,053
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total 2,947,094 2,979,671
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total 8,833 4,382
Real Estate Portfolio Segment[Member]    
Loans and Leases Receivable, Gross, Total 5,715,666 5,378,952
Real Estate Portfolio Segment[Member] | Construction Loans [Member]    
Loans and Leases Receivable, Gross, Total 1,164,690 1,103,076
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]    
Loans and Leases Receivable, Gross, Total 1,919,811 1,874,103
Real Estate Portfolio Segment[Member] | One to Four Family [Member]    
Loans and Leases Receivable, Gross, Total 926,697 826,765
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]    
Loans and Leases Receivable, Gross, Total 2,869,158 2,678,084
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total 5,705,090 5,371,266
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Construction Loans [Member]    
Loans and Leases Receivable, Gross, Total 1,164,690 1,103,076
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Owner Occupied Commercial [Member]    
Loans and Leases Receivable, Gross, Total 1,916,539 1,873,082
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | One to Four Family [Member]    
Loans and Leases Receivable, Gross, Total 924,957 824,756
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Other Mortgages [Member]    
Loans and Leases Receivable, Gross, Total 2,863,594 2,673,428
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total 10,576 7,686
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Construction Loans [Member]    
Loans and Leases Receivable, Gross, Total 0 0
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Owner Occupied Commercial [Member]    
Loans and Leases Receivable, Gross, Total 3,272 1,021
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | One to Four Family [Member]    
Loans and Leases Receivable, Gross, Total 1,740 2,009
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Other Mortgages [Member]    
Loans and Leases Receivable, Gross, Total 5,564 4,656
Consumer Portfolio Segment [Member]    
Loans and Leases Receivable, Gross, Total 62,674 66,853
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total 62,659 66,824
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]    
Loans and Leases Receivable, Gross, Total $ 15 $ 29