Loans (Summary of TDRs with a Payment Default During the Period) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Loans	Dec. 31, 2014 USD ($) Loans	Dec. 31, 2013 USD ($) Loans
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of loans | Loans	9	25	58
Financing receivable modification subsequent default recorded investment | $	$ 2,287	$ 3,496	$ 10,746
Commercial [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of loans | Loans	1	7	23
Financing receivable modification subsequent default recorded investment | $	$ 1,206	$ 885	$ 2,745
Real estate commercial [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of loans | Loans	5	6	8
Financing receivable modification subsequent default recorded investment | $	$ 1,016	$ 2,352	$ 4,278
Real Estate Construction Loans [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of loans | Loans	0	0	3
Financing receivable modification subsequent default recorded investment | $	$ 0	$ 0	$ 371
Land Development Loans [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of loans | Loans	0	0	2
Financing receivable modification subsequent default recorded investment | $	$ 0	$ 0	$ 1,526
Commercial loan portfolio [Member] | Commercial Loan Portfolio [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of loans | Loans	6	13	36
Financing receivable modification subsequent default recorded investment | $	$ 2,222	$ 3,237	$ 8,920
Consumer loan portfolio (real estate residential) [Member] | Consumer Portfolio Segment [Member]
Troubled debt restructurings on financing receivables with defaults payment
Financing receivable modifications subsequent default number of loans | Loans	3	12	22
Financing receivable modification subsequent default recorded investment | $	$ 65	$ 259	$ 1,826