Loans, Schedule of Impaired Financing Receivable (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Total [Abstract]
Recorded Investment	$ 6,780		$ 6,780		$ 4,280
Unpaid Principal Balance	6,936		6,936		4,408
Related Allowance	1,032		1,032		619
Average recorded investment [Abstract]
Total	6,367	4,595	5,602	5,342
Cash basis interest recognized on impaired loans [Abstract]
Total	45	40	195	132
1-4 family first-lien residential mortgages [Member]
With no related allowance recorded [Abstract]
Recorded Investment	946		946		442
Unpaid Principal Balance	946		946		442
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	1,188		1,188		856
Unpaid Principal Balance	1,188		1,188		856
Related Allowance	208		208		149
Total [Abstract]
Recorded Investment	2,134		2,134		1,298
Unpaid Principal Balance	2,134		2,134		1,298
Related Allowance	208		208		149
Average recorded investment [Abstract]
Total	1,879	1,004	1,565	1,109
Cash basis interest recognized on impaired loans [Abstract]
Total	34	6	80	29
Residential construction mortgage [Member]
With no related allowance recorded [Abstract]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Total [Abstract]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Commercial real estate [Member]
With no related allowance recorded [Abstract]
Recorded Investment	1,340		1,340		968
Unpaid Principal Balance	1,474		1,474		1,096
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	1,456		1,456		735
Unpaid Principal Balance	1,456		1,456		735
Related Allowance	489		489		109
Total [Abstract]
Recorded Investment	2,796		2,796		1,703
Unpaid Principal Balance	2,930		2,930		1,831
Related Allowance	489		489		109
Average recorded investment [Abstract]
Total	2,801	2,056	2,449	2,695
Cash basis interest recognized on impaired loans [Abstract]
Total	0	26	60	71
Commercial lines of credit [Member]
With no related allowance recorded [Abstract]
Recorded Investment	374		374		74
Unpaid Principal Balance	385		385		74
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	0		0		378
Unpaid Principal Balance	0		0		378
Related Allowance	0		0		178
Total [Abstract]
Recorded Investment	374		374		452
Unpaid Principal Balance	385		385		452
Related Allowance	0		0		178
Average recorded investment [Abstract]
Total	412	37	432	125
Cash basis interest recognized on impaired loans [Abstract]
Total	(5)	0	13	0
Other commercial and industrial loans [Member]
With no related allowance recorded [Abstract]
Recorded Investment	672		672		257
Unpaid Principal Balance	683		683		257
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	296		296		122
Unpaid Principal Balance	296		296		122
Related Allowance	269		269		122
Total [Abstract]
Recorded Investment	968		968		379
Unpaid Principal Balance	979		979		379
Related Allowance	269		269		122
Average recorded investment [Abstract]
Total	768	930	677	823
Cash basis interest recognized on impaired loans [Abstract]
Total	11	5	30	18
Municipal [Member]
With no related allowance recorded [Abstract]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Total [Abstract]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Home equity and junior liens [Member]
With no related allowance recorded [Abstract]
Recorded Investment	346		346		312
Unpaid Principal Balance	346		346		312
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	156		156		136
Unpaid Principal Balance	156		156		136
Related Allowance	60		60		61
Total [Abstract]
Recorded Investment	502		502		448
Unpaid Principal Balance	502		502		448
Related Allowance	60		60		61
Average recorded investment [Abstract]
Total	502	568	477	590
Cash basis interest recognized on impaired loans [Abstract]
Total	4	3	11	14
Other Consumer [Member]
With no related allowance recorded [Abstract]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
With an allowance recorded [Abstract]
Recorded Investment	6		6		0
Unpaid Principal Balance	6		6		0
Related Allowance	6		6		0
Total [Abstract]
Recorded Investment	6		6		0
Unpaid Principal Balance	6		6		0
Related Allowance	6		6		0
Average recorded investment [Abstract]
Total	5	0	2	0
Cash basis interest recognized on impaired loans [Abstract]
Total	$ 1	$ 0	$ 1	$ 0