Regulatory Matters (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Corporation [Member]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations
Total Capital (to Risk-Weighted Assets) Actual, Amount	$ 274,504	$ 265,105
Total Capital (to Risk-Weighted Assets) Actual, Ratio	15.62%	15.56%
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, Amount	140,631	136,343
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, Ratio	8.00%	8.00%
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	175,788	170,429
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets) Actual, Amount	252,240	243,474
Tier 1 Capital (to Risk-Weighted Assets) Actual, Ratio	14.35%	14.29%
Tier 1 Capital (to Risk - Weighed Assets) For Capital Adequacy, Amount	70,315	68,172
Tier 1 Capital (to Risk - Weighted Assets) For Capital Adequacy, Ratio	4.00%	4.00%
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	105,473	102,257
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets) Actual, Amount	252,240	243,474
Tier 1 Capital (to Average Assets) Actual, Ratio	11.47%	11.53%
Tier 1 Capital (to Average Assets) For Capital Adequacy, Amount	87,934	84,501
Tier 1 Capital (to Average Assets) For Capital Adequacy, Ratio	4.00%	4.00%
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	109,918	105,627
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%
Bank [Member]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations
Total Capital (to Risk-Weighted Assets) Actual, Amount	246,861	249,694
Total Capital (to Risk-Weighted Assets) Actual, Ratio	14.22%	14.89%
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, Amount	138,841	134,158
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, Ratio	8.00%	8.00%
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	173,552	167,697
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets) Actual, Amount	225,126	228,619
Tier 1 Capital (to Risk-Weighted Assets) Actual, Ratio	12.97%	13.63%
Tier 1 Capital (to Risk - Weighed Assets) For Capital Adequacy, Amount	69,421	67,079
Tier 1 Capital (to Risk - Weighted Assets) For Capital Adequacy, Ratio	4.00%	4.00%
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	104,131	100,618
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets) Actual, Amount	225,126	228,619
Tier 1 Capital (to Average Assets) Actual, Ratio	10.31%	10.91%
Tier 1 Capital (to Average Assets) For Capital Adequacy, Amount	87,310	83,840
Tier 1 Capital (to Average Assets) For Capital Adequacy, Ratio	4.00%	4.00%
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 109,137	$ 104,800
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%