Regulatory Matters (Capital Amounts and Ratios) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual capital (to risk weighted assets)	$ 149,994	$ 141,434
Actual capital (to risk weighted assets) (ratio)	12.76%	12.09%
Minimum capital (to risk weighted assets)	94,239	93,564
Minimum capital (to risk weighted assets) (ratio)	8.00%	8.00%
Well capitalized (to risk weighted assets)	0	0
Well capitalized (to risk weighted assets) (ratio)	0.00%	0.00%
Actual Tier I Capital (to risk weighted assets)	135,277	126,810
Actual Tier I Capital (to risk weighted assets) (ratio)	11.51%	10.84%
Minimum Tier I Capital (to risk weighted assets)	47,119	46,782
Minimum Tier I Capital (to risk weighted assets) (ratio)	4.00%	4.00%
Well Capitalized Tier I Capital (to risk weighted assets)	0	0
Well Capitalized Tier I Capital (to risk weighted assets) (ratio)	0.00%	0.00%
Actual Tier I Capital (to average assets)	135,277	126,810
Actual Tier I Capital (to average assets) (ratio)	8.81%	8.17%
Minimum Tier I Capital (to average assets)	61,414	62,072
Minimum Tier I Capital (to average assets) (ratio)	4.00%	4.00%
Well Capitalized Tier I Capital (to average assets)	0	0
Well Capitalized Tier I Capital (to average assets) (ratio)	0.00%	0.00%
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Actual capital (to risk weighted assets)	147,353	141,088
Actual capital (to risk weighted assets) (ratio)	12.56%	12.08%
Minimum capital (to risk weighted assets)	93,881	93,410
Minimum capital (to risk weighted assets) (ratio)	8.00%	8.00%
Well capitalized (to risk weighted assets)	117,352	116,762
Well capitalized (to risk weighted assets) (ratio)	10.00%	10.00%
Actual Tier I Capital (to risk weighted assets)	132,659	126,488
Actual Tier I Capital (to risk weighted assets) (ratio)	11.30%	10.83%
Minimum Tier I Capital (to risk weighted assets)	46,941	46,705
Minimum Tier I Capital (to risk weighted assets) (ratio)	4.00%	4.00%
Well Capitalized Tier I Capital (to risk weighted assets)	70,411	70,057
Well Capitalized Tier I Capital (to risk weighted assets) (ratio)	6.00%	6.00%
Actual Tier I Capital (to average assets)	132,659	126,488
Actual Tier I Capital (to average assets) (ratio)	8.67%	8.17%
Minimum Tier I Capital (to average assets)	61,175	61,933
Minimum Tier I Capital (to average assets) (ratio)	4.00%	4.00%
Well Capitalized Tier I Capital (to average assets)	$ 76,469	$ 77,416
Well Capitalized Tier I Capital (to average assets) (ratio)	5.00%	5.00%