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Borrowings and Subordinated Debentures (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Advances from the Federal Home Loan Bank [Abstract]      
Line of credit with federal home loan bank, amount $ 248,100    
Federal Home Loan Bank, advances, general debt obligations, disclosures, collateral pledged 19,000    
Amount [Abstract]      
2017 31,000   $ 44,000
2018 10,000   10,000
2019 15,000   15,000
Total FHLB borrowings $ 56,000   $ 69,000
Rate [Abstract]      
2017 1.24%   1.19%
2018 2.01%   2.01%
2019 1.40%   1.40%
Repayments of Long-term Debt $ 15,000 $ 113  
Line of credit maximum borrowing capacity 20,000    
Outstanding line of credit 0   $ 0
Notes payable | Notes PayableTo PNCBank Due January2018 Member      
Rate [Abstract]      
Notes payable with PNC Bank $ 35,000   $ 35,000
Weighted average interest rate on other borrowings from PNC Bank (as a percent) 3.65%