Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Investment	Mar. 31, 2014 Investment
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		1
Maturity date extensions	1	3
Total number of loans	1	4
Pre-modification outstanding recorded investment	$ 58	$ 504
Post-modification outstanding recorded investment	58	505
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
Reduced or deferred payments
Converted to interest only
Maturity date extensions	1	1
Total number of loans	1	1
Pre-modification outstanding recorded investment	58	49
Post-modification outstanding recorded investment	58	49
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
Reduced or deferred payments
Converted to interest only
Maturity date extensions		2
Total number of loans		2
Pre-modification outstanding recorded investment		339
Post-modification outstanding recorded investment		340
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		1
Maturity date extensions
Total number of loans		1
Pre-modification outstanding recorded investment		116
Post-modification outstanding recorded investment		116
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
Converted to interest only
Maturity date extensions
Total number of loans
Pre-modification outstanding recorded investment
Post-modification outstanding recorded investment
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