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, 2019
Jun. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Dec. 31, 2017
Financing receivable, gross $ 7,022,069   $ 6,533,499      
Less: Allowance for loan losses (77,192) $ (71,386) (68,600) [1] $ (66,879) $ (64,239) $ (59,406)
Loans and Leases Receivable, Net Amount, Total $ 6,944,877   $ 6,464,899 [1]      
Financing receivable, gross, percentage 100.00%   100.00%      
Commercial Real Estate Portfolio Segment [Member]            
Financing receivable, gross $ 2,653,934   $ 2,513,225      
Less: Allowance for loan losses $ (45,222) (38,709) $ (39,016) (39,101) (36,178) (32,880)
Financing receivable, gross, percentage 37.79%   38.47%      
Real Estate Portfolio Segment[Member]            
Financing receivable, gross $ 3,751,329   $ 3,422,589      
Financing receivable, gross, percentage 53.42%   52.39%      
Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Financing receivable, gross $ 550,871   $ 533,192      
Less: Allowance for loan losses $ (3,192) (3,419) $ (3,522) (3,934) (4,062) (4,989)
Financing receivable, gross, percentage 7.85%   8.16%      
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member]            
Financing receivable, gross $ 1,526,911   $ 1,463,887      
Financing receivable, gross, percentage 21.74%   22.41%      
Real Estate Portfolio Segment[Member] | One to Four Family [Member]            
Financing receivable, gross $ 632,346   $ 621,634      
Financing receivable, gross, percentage 9.01%   9.51%      
Real Estate Portfolio Segment[Member] | Other Mortgages [Member]            
Financing receivable, gross $ 1,592,072   $ 1,337,068      
Financing receivable, gross, percentage 22.67%   20.46%      
Consumer Portfolio Segment [Member]            
Financing receivable, gross $ 65,935   $ 64,493      
Less: Allowance for loan losses $ (514) $ (475) $ (554) $ (515) $ (561) $ (515)
Financing receivable, gross, percentage 0.94%   0.99%      
[1] Derived from audited financial statements.