Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Investment	Mar. 31, 2017 USD ($) Investment
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification
Renewals deemed a concession	2	1
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans	2	1
Pre-modification outstanding recorded investment | $	$ 549	$ 149
Post-modification outstanding recorded investment | $	$ 669	$ 149
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 a concession		1
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans		1
Pre-modification outstanding recorded investment | $		$ 149
Post-modification outstanding recorded investment | $		$ 149
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 a concession	2
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans	2
Pre-modification outstanding recorded investment | $	$ 549
Post-modification outstanding recorded investment | $	$ 669