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 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Dec. 31, 2016
Balance, beginning of period $ 55,059 $ 46,998 $ 51,893 [1] $ 43,419    
Charge-offs (1,555) (1,574) (7,997) (4,012)    
Recoveries 152 45 393 203    
Provision 4,803 3,464 14,170 9,323    
Balance, end of period 58,459 48,933 58,459 48,933    
Balance, end of period 58,459 46,998 58,459 48,933 $ 58,459 $ 51,893 [1]
Individually Evaluated for Impairment         8,496 8,152
Collectively Evaluated for Impairment         49,963 43,741
Loans         5,628,765 4,911,770 [1]
Individually Evaluated for Impairment         49,610 45,589
Collectively Evaluated for Impairment         5,579,155 4,866,181
Commercial Real Estate Portfolio Segment [Member]            
Balance, beginning of period 29,127 23,655 28,872 21,495    
Charge-offs (924) (1,270) (6,846) (2,732)    
Recoveries 67 35 273 39    
Provision 3,431 3,560 9,402 7,178    
Balance, end of period 31,701 25,980 31,701 25,980    
Balance, end of period 29,127 23,655 31,701 25,980 31,701 28,872
Individually Evaluated for Impairment         5,725 6,607
Collectively Evaluated for Impairment         25,976 22,265
Loans         2,223,910 1,982,267
Individually Evaluated for Impairment         30,405 27,922
Collectively Evaluated for Impairment         2,193,505 1,954,345
Real Estate Portfolio Segment[Member]            
Loans         2,879,253 2,539,207
Real Estate Portfolio Segment[Member] | Construction Loans [Member]            
Balance, beginning of period 5,138 5,279 5,125 5,432    
Charge-offs (16) (79) (56) (815)    
Recoveries 12 9 42 64    
Provision 197 (394) 220 134    
Balance, end of period 5,331 4,815 5,331 4,815    
Balance, end of period 5,138 5,279 5,331 4,815 5,331 5,125
Individually Evaluated for Impairment         829 923
Collectively Evaluated for Impairment         4,502 4,202
Loans         467,838 335,085
Individually Evaluated for Impairment         3,328 4,314
Collectively Evaluated for Impairment         464,510 330,771
Real Estate Portfolio Segment[Member] | Real Estate Loan [Member]            
Balance, beginning of period 20,392 17,600 17,504 16,061    
Charge-offs (550) (144) (922) (335)    
Recoveries 59 1 62 100    
Provision 1,065 282 4,322 1,913    
Balance, end of period 20,966 17,739 20,966 17,739    
Balance, end of period 20,392 17,600 20,966 17,739 20,966 17,504
Individually Evaluated for Impairment         1,892 622
Collectively Evaluated for Impairment         19,074 16,882
Loans         2,879,253 2,539,207
Individually Evaluated for Impairment         15,789 13,350
Collectively Evaluated for Impairment         2,863,464 2,525,857
Consumer Portfolio Segment [Member]            
Balance, beginning of period 402 464 392 431    
Charge-offs (65) (81) (173) (130)    
Recoveries 14 16    
Provision 110 16 226 98    
Balance, end of period 461 399 461 399    
Balance, end of period $ 402 $ 464 $ 461 $ 399 461 392
Individually Evaluated for Impairment         50
Collectively Evaluated for Impairment         411 392
Loans         57,764 55,211
Individually Evaluated for Impairment         88 3
Collectively Evaluated for Impairment         $ 57,676 $ 55,208
[1] Derived from audited financial statements