Allowance for Loan Losses (Additional information about impaired loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Impaired loans
Average Recorded Investment	$ 1,702	$ 1,659	$ 1,684	$ 1,950
Interest recognized on impaired loans	1		1	3
Commercial and industrial [Member]
Impaired loans
Average Recorded Investment	637	512	609	506
Interest recognized on impaired loans	1		1
Commercial and industrial [Member] | Commercial [Member]
Impaired loans
Average Recorded Investment	499	460	482	471
Interest recognized on impaired loans
Commercial and industrial [Member] | SBA loans [Member]
Impaired loans
Average Recorded Investment		18	8	18
Interest recognized on impaired loans	1		1
Commercial and industrial [Member] | Asset-based [Member]
Impaired loans
Average Recorded Investment	138	34	119	17
Interest recognized on impaired loans
Commercial real estate [Member]
Impaired loans
Average Recorded Investment	1,065	1,147	1,075	1,444
Interest recognized on impaired loans				3
Commercial real estate [Member] | SBA loans [Member]
Impaired loans
Average Recorded Investment		58		58
Interest recognized on impaired loans
Commercial real estate [Member] | Commercial mortgages [Member]
Impaired loans
Average Recorded Investment	666	649	670	946
Interest recognized on impaired loans
Commercial real estate [Member] | Religious organizations [Member]
Impaired loans
Average Recorded Investment	399	440	405	440
Interest recognized on impaired loans				$ 3