Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans - Summary of Loans (Details)

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Note 5 - Loans - Summary of Loans (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Financing receivable, gross $ 8,508,554   $ 7,261,451      
Less allowance for loan losses (92,440) $ (91,507) (76,584) [1] $ (77,192) $ (71,386) $ (68,600)
Net Loans $ 8,416,114   $ 7,184,867 [1]      
Financing receivable, gross percentage 100.00%   100.00%      
Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross $ 3,466,189   $ 2,696,210      
Less allowance for loan losses $ (49,273) (47,986) $ (43,666) (45,222) (38,709) (39,016)
Financing receivable, gross percentage 40.74%   37.13%      
Real Estate Portfolio Segment[Member]            
Financing receivable, gross $ 4,453,612   $ 3,979,060      
Financing receivable, gross percentage 52.34%   54.80%      
Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross $ 530,919   $ 521,392      
Less allowance for loan losses $ (4,090) (4,531) $ (2,768) (3,192) (3,419) (3,522)
Financing receivable, gross percentage 6.24%   7.18%      
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross $ 1,725,222   $ 1,587,478      
Financing receivable, gross percentage 20.27%   21.86%      
Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross $ 671,841   $ 644,188      
Financing receivable, gross percentage 7.90%   8.87%      
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross $ 2,056,549   $ 1,747,394      
Financing receivable, gross percentage 24.17%   24.07%      
Consumer Portfolio Segment [Member]            
Financing receivable, gross $ 57,834   $ 64,789      
Less allowance for loan losses $ (562) $ (591) $ (497) $ (514) $ (475) $ (554)
Financing receivable, gross percentage 0.68%   0.89%      
[1] Derived from audited financial statements.