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Allowance for Loan Losses (Performing and Non-performing Outstanding Balances) (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Performing [Member]    
Performing and non-performing outstanding balances of the residential and consumer portfolios    
Outstanding balance of consumer loan $ 275,961 $ 276,208
Performing [Member] | Real estate-mortgage [Member]    
Performing and non-performing outstanding balances of the residential and consumer portfolios    
Outstanding balance of consumer loan 255,901 257,199
Performing [Member] | Consumer [Member]    
Performing and non-performing outstanding balances of the residential and consumer portfolios    
Outstanding balance of consumer loan 20,060 19,009
Non-Performing [Member]    
Performing and non-performing outstanding balances of the residential and consumer portfolios    
Outstanding balance of consumer loan 1,699 1,417
Non-Performing [Member] | Real estate-mortgage [Member]    
Performing and non-performing outstanding balances of the residential and consumer portfolios    
Outstanding balance of consumer loan 1,629 $ 1,417
Non-Performing [Member] | Consumer [Member]    
Performing and non-performing outstanding balances of the residential and consumer portfolios    
Outstanding balance of consumer loan $ 70