Loans (Troubled Debt Restructurings on Financing Receivables) (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016 USD ($) loan	Dec. 31, 2015 USD ($) loan
Financing receivable post modification recorded investment | $	$ 16,130	$ 18,568
Less: TDRs included in non-accrual loans | $	(5,252)	(5,435)
Accrual TDR loans | $	$ 10,878	$ 13,133
Number of TDR loans | loan	24	30
Number of non-accrual TDR loans | loan	(5)	(7)
Number of accrual TDR loans | loan	19	23
Commercial Equipment [Member]
Financing receivable post modification recorded investment | $	$ 118	$ 123
Number of TDR loans | loan	2	2
Commercial Loans [Member]
Financing receivable post modification recorded investment | $	$ 1,141	$ 1,384
Number of TDR loans | loan	7	8
Construction and Land Development [Member]
Financing receivable post modification recorded investment | $	$ 4,370	$ 4,283
Number of TDR loans | loan	4	4
Residential Rentals [Member]
Financing receivable post modification recorded investment | $	$ 230	$ 2,058
Number of TDR loans | loan	1	5
Residential First Mortgages [Member]
Financing receivable post modification recorded investment | $	$ 556	$ 881
Number of TDR loans | loan	2	3
Commercial Real Estate [Member]
Financing receivable post modification recorded investment | $	$ 9,715	$ 9,839
Number of TDR loans | loan	8	8