Loans (Summary of Performing and Nonperforming TDRs Modified During the Period) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Loans	Mar. 31, 2012 Loans
Schedule providing information on performing and nonperforming TDRs
Performing and nonperforming modified TDRs, Number of loans	23	31
Performing and nonperforming modified TDRs, Pre-modification recorded investment	$ 4,143	$ 7,583
Performing and nonperforming modified TDRs, Post-modification recorded investment	4,108	7,490
Subtotal-commercial loan portfolio [Member] | Commercial Loan Portfolio [Member]
Schedule providing information on performing and nonperforming TDRs
Performing and nonperforming modified TDRs, Number of loans	7	11
Performing and nonperforming modified TDRs, Pre-modification recorded investment	2,894	4,429
Performing and nonperforming modified TDRs, Post-modification recorded investment	2,894	4,429
Consumer loan portfolio (real estate residential) [Member] | Consumer Portfolio Segment [Member]
Schedule providing information on performing and nonperforming TDRs
Performing and nonperforming modified TDRs, Number of loans	16	20
Performing and nonperforming modified TDRs, Pre-modification recorded investment	1,249	3,154
Performing and nonperforming modified TDRs, Post-modification recorded investment	1,214	3,061
Commercial [Member] | Commercial Loan Portfolio [Member]
Schedule providing information on performing and nonperforming TDRs
Performing and nonperforming modified TDRs, Number of loans	3	5
Performing and nonperforming modified TDRs, Pre-modification recorded investment	458	1,262
Performing and nonperforming modified TDRs, Post-modification recorded investment	458	1,262
Real estate commercial [Member] | Commercial Loan Portfolio [Member]
Schedule providing information on performing and nonperforming TDRs
Performing and nonperforming modified TDRs, Number of loans	3	5
Performing and nonperforming modified TDRs, Pre-modification recorded investment	2,174	1,529
Performing and nonperforming modified TDRs, Post-modification recorded investment	2,174	1,529
Land development [Member] | Commercial Loan Portfolio [Member]
Schedule providing information on performing and nonperforming TDRs
Performing and nonperforming modified TDRs, Number of loans	1	1
Performing and nonperforming modified TDRs, Pre-modification recorded investment	262	1,638
Performing and nonperforming modified TDRs, Post-modification recorded investment	$ 262	$ 1,638