Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Loans - Analysis of allowance for Loans Losses by Portfolio Segment (Details)

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Note 5 - Loans - Analysis of allowance for Loans Losses by Portfolio Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Dec. 31, 2016
Balance, beginning of period $ 53,892 $ 45,145 $ 51,893 [1] $ 43,419    
Charge-offs (3,246) (1,989) (6,442) (2,438)    
Recoveries 32 42 241 158    
Provision 4,381 3,800 9,367 5,859    
Balance, end of period 55,059 46,998 55,059 46,998    
Balance, end of period 55,059 45,145 55,059 46,998 $ 55,059 $ 51,893 [1]
Collectively Evaluated for Impairment         47,902 43,741
Loans         5,343,688 4,911,770 [1]
Individually Evaluated for Impairment         51,021 45,589
Collectively Evaluated for Impairment         5,292,667 4,866,181
Individually Evaluated for Impairment         7,157 8,152
Commercial Real Estate Portfolio Segment [Member]            
Balance, beginning of period 28,707 22,839 28,872 21,495    
Charge-offs (3,067) (1,412) (5,922) (1,462)    
Recoveries 16 1 206 4    
Provision 3,471 2,227 5,971 3,618    
Balance, end of period 29,127 23,655 29,127 23,655    
Balance, end of period 28,707 22,839 29,127 23,655 29,127 28,872
Collectively Evaluated for Impairment         24,670 22,265
Loans         2,123,498 1,982,267
Individually Evaluated for Impairment         31,430 27,922
Collectively Evaluated for Impairment         2,092,068 1,954,345
Individually Evaluated for Impairment         4,457 6,607
Real Estate Portfolio Segment[Member]            
Loans         2,769,568 2,539,207
Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Balance, beginning of period 4,825 5,005 5,125 5,432    
Charge-offs (40) (355) (40) (736)    
Recoveries 14 39 30 55    
Provision 339 590 23 528    
Balance, end of period 5,138 5,279 5,138 5,279    
Balance, end of period 4,825 5,005 5,138 5,279 5,138 5,125
Collectively Evaluated for Impairment         4,217 4,202
Loans         395,398 335,085
Individually Evaluated for Impairment         3,420 4,314
Collectively Evaluated for Impairment         391,978 330,771
Individually Evaluated for Impairment         921 923
Real Estate Portfolio Segment[Member] | Real Estate Loan [Member]            
Balance, beginning of period 19,962 16,901 17,504 16,061    
Charge-offs (106) (191) (372) (191)    
Recoveries 2 2 4 99    
Provision 534 888 3,256 1,631    
Balance, end of period 20,392 17,600 20,392 17,600    
Balance, end of period 19,962 16,901 20,392 17,600 20,392 17,504
Collectively Evaluated for Impairment         18,613 16,882
Loans         2,769,568 2,539,207
Individually Evaluated for Impairment         16,171 13,350
Collectively Evaluated for Impairment         2,753,397 2,525,857
Individually Evaluated for Impairment         1,779 622
Consumer Portfolio Segment [Member]            
Balance, beginning of period 398 400 392 431    
Charge-offs (33) (31) (108) (49)    
Recoveries 1    
Provision 37 95 117 82    
Balance, end of period 402 464 402 464    
Balance, end of period $ 398 $ 400 $ 402 $ 464 402 392
Collectively Evaluated for Impairment         402 392
Loans         55,224 55,211
Individually Evaluated for Impairment         3
Collectively Evaluated for Impairment         55,224 55,208
Individually Evaluated for Impairment        
[1] Derived from audited financial statements