Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013 Investment	Jun. 30, 2012 Investment
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession	2	2
Reduced or deferred payments		2
Converted to interest only		1
Maturity date extensions
Total number of loans	2	5
Pre-modification outstanding recorded investment	$ 291	$ 4,423
Post-modification outstanding recorded investment	291	4,423
Commercial [Member] | Owner occupied [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans
Pre-modification outstanding recorded investment
Post-modification outstanding recorded investment
Commercial [Member] | Non-owner occupied [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession		1
Reduced or deferred payments		1
Converted to interest only
Maturity date extensions
Total number of loans		2
Pre-modification outstanding recorded investment		3,918
Post-modification outstanding recorded investment		3,918
Commercial [Member] | Construction [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans
Pre-modification outstanding recorded investment
Post-modification outstanding recorded investment
Commercial [Member] | Business [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession	2	1
Reduced or deferred payments
Converted to interest only		1
Maturity date extensions
Total number of loans	2	2
Pre-modification outstanding recorded investment	291	339
Post-modification outstanding recorded investment	291	339
Consumer [Member] | Real estate [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans
Pre-modification outstanding recorded investment
Post-modification outstanding recorded investment
Consumer [Member] | Home equity [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession
Reduced or deferred payments		1
Converted to interest only
Maturity date extensions
Total number of loans		1
Pre-modification outstanding recorded investment		166
Post-modification outstanding recorded investment		166
Consumer [Member] | Construction [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans
Pre-modification outstanding recorded investment
Post-modification outstanding recorded investment
Consumer [Member] | Other [Member]
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed concession
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans
Pre-modification outstanding recorded investment
Post-modification outstanding recorded investment