Quarterly report pursuant to Section 13 or 15(d)

Loans Loans - Summary of PCI Loans (Details)

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Loans Loans - Summary of PCI Loans (Details)
$ in Thousands
Sep. 30, 2016
USD ($)
SecurityLoan
loan_pool
Jun. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
SecurityLoan
loan_pool
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans $ 3,552,659   $ 3,183,316      
Allowance for loans losses (38,972)   (42,935)      
Loans receivable, net 3,513,687   3,140,381      
Real estate loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 3,210,687   2,845,514      
Real estate loans [Member] | Residential property [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 330,675   236,036      
Commercial and industrial loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 319,656   312,876      
Consumer loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 22,316   24,926      
PCI Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 15,540   20,014 $ 25,145    
Allowance for loans losses (5,533) $ (5,448) (5,441) (3,138) $ (1,352) $ (1,026)
Loans receivable, net $ 10,007   $ 14,573 $ 22,007   $ 43,475
PCI Loans [Member] | Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 61,000   85,000      
Number of Pools | loan_pool 11,000   15,000      
Total gross loans $ 13,622   $ 17,981      
Percentage of Total 87.70%   89.80%      
Allowance for loans losses $ (5,169)   $ (5,136)      
Loans receivable, net $ 8,453   $ 12,845      
PCI Loans [Member] | Non-Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 3,000   4,000      
Total gross loans $ 1,918   $ 2,033      
Percentage of Total 12.30%   10.20%      
Allowance for loans losses $ (364)   $ (305)      
Loans receivable, net 1,554   1,728      
PCI Loans [Member] | Real estate loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 15,355   19,796      
PCI Loans [Member] | Real estate loans [Member] | Commercial property [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 14,375   18,639      
PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans 980   1,157      
Allowance for loans losses (80)   (151)      
Loans receivable, net $ 900   $ 1,006      
PCI Loans [Member] | Real estate loans [Member] | Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 54,000   73,000      
Number of Pools | loan_pool 7,000   11,000      
Total gross loans $ 13,437   $ 17,763      
Percentage of Total 87.50%   89.70%      
PCI Loans [Member] | Real estate loans [Member] | Pooled Loans [Member] | Commercial property [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 54,000   71,000      
Number of Pools | loan_pool 7,000   9,000      
Total gross loans $ 13,437   $ 17,644      
Percentage of Total 93.50%   94.70%      
PCI Loans [Member] | Real estate loans [Member] | Pooled Loans [Member] | Residential property [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 0   2,000      
Number of Pools | loan_pool 0   2,000      
Total gross loans $ 0   $ 119      
Percentage of Total 0.00%   10.30%      
PCI Loans [Member] | Real estate loans [Member] | Non-Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 3,000   4,000      
Total gross loans $ 1,918   $ 2,033      
Percentage of Total 12.50%   10.30%      
PCI Loans [Member] | Real estate loans [Member] | Non-Pooled Loans [Member] | Commercial property [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 1,000   2,000      
Total gross loans $ 938   $ 995      
Percentage of Total 6.50%   5.30%      
PCI Loans [Member] | Real estate loans [Member] | Non-Pooled Loans [Member] | Residential property [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 2,000   2,000      
Total gross loans $ 980   $ 1,038      
Percentage of Total 100.00%   89.70%      
PCI Loans [Member] | Commercial and industrial loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans $ 135   $ 171      
PCI Loans [Member] | Commercial and industrial loans [Member] | Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 6,000   11,000      
Number of Pools | loan_pool 3,000   3,000      
Total gross loans $ 135   $ 171      
Percentage of Total 100.00%   100.00%      
PCI Loans [Member] | Commercial and industrial loans [Member] | Non-Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 0   0      
Total gross loans $ 0   $ 0      
Percentage of Total 0.00%   0.00%      
PCI Loans [Member] | Consumer loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total gross loans $ 50   $ 47      
Allowance for loans losses (7)   (2)      
Loans receivable, net $ 43   $ 45      
PCI Loans [Member] | Consumer loans [Member] | Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 1,000   1,000      
Number of Pools | loan_pool 1,000   1,000      
Total gross loans $ 50   $ 47      
Percentage of Total 100.00%   100.00%      
PCI Loans [Member] | Consumer loans [Member] | Non-Pooled Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of Loans | SecurityLoan 0   0      
Total gross loans $ 0   $ 0      
Percentage of Total 0.00%   0.00%