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
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Balance, beginning of period $ 51,893 [1] $ 43,419  
Charge-offs (3,196) (449)  
Recoveries 209 116  
Provision 4,986 2,059  
Balance, end of period 53,892 45,145  
Individually Evaluated for Impairment 8,032   $ 8,152
Collectively Evaluated for Impairment 45,860   43,741
Loans 5,151,984   4,911,770 [1]
Individually Evaluated for Impairment 43,021   45,589
Collectively Evaluated for Impairment 5,108,963   4,866,181
Commercial Real Estate Portfolio Segment [Member]      
Balance, beginning of period 28,872 21,495  
Charge-offs (2,855) (50)  
Recoveries 190 3  
Provision 2,500 1,391  
Balance, end of period 28,707 22,839  
Individually Evaluated for Impairment 5,297   6,607
Collectively Evaluated for Impairment 23,410   22,265
Loans 2,061,503   1,982,267
Individually Evaluated for Impairment 24,230   27,922
Collectively Evaluated for Impairment 2,037,273   1,954,345
Real Estate Portfolio Segment[Member]      
Loans 2,689,794   2,539,207
Real Estate Portfolio Segment[Member] | Construction Loans [Member]      
Balance, beginning of period 5,125 5,432  
Charge-offs (381)  
Recoveries 16 16  
Provision (316) (62)  
Balance, end of period 4,825 5,005  
Individually Evaluated for Impairment 921   923
Collectively Evaluated for Impairment 3,904   4,202
Loans 345,777   335,085
Individually Evaluated for Impairment 3,705   4,314
Collectively Evaluated for Impairment 342,072   330,771
Real Estate Portfolio Segment[Member] | Real Estate Loan [Member]      
Balance, beginning of period 17,504 16,061  
Charge-offs (266)  
Recoveries 2 97  
Provision 2,722 743  
Balance, end of period 19,962 16,901  
Individually Evaluated for Impairment 1,814   622
Collectively Evaluated for Impairment 18,148   16,882
Loans 2,689,794   2,539,207
Individually Evaluated for Impairment 15,084   13,350
Collectively Evaluated for Impairment 2,674,710   2,525,857
Consumer Portfolio Segment [Member]      
Balance, beginning of period 392 431  
Charge-offs (75) (18)  
Recoveries 1  
Provision 80 (13)  
Balance, end of period 398 $ 400  
Individually Evaluated for Impairment  
Collectively Evaluated for Impairment 398   392
Loans 54,910   55,211
Individually Evaluated for Impairment 2   3
Collectively Evaluated for Impairment $ 54,908   $ 55,208
[1] Derived from audited financial statements