Regulatory Matters (Summary Of Actual Capital Amounts And Ratios) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Summit [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to risk weighted assets), Actual Amount	$ 138,593	$ 136,060
Tier I Capital (to risk weighted assets), Actual Amount	115,221	109,989
Tier I Capital (to average assets), Actual Amount	115,221	109,989
Total Capital (to risk weighted assets), Actual Ratio	14.00%	13.00%
Tier I Capital (to risk weighted assets), Actual Ratio	11.60%	10.50%
Tier I Capital (to average assets), Actual Ratio	8.30%	7.60%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	79,391	83,617
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	39,695	41,809
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	55,591	58,031
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Ratio	8.00%	8.00%
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Ratio	4.00%	4.00%
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Ratio	4.00%	4.00%
Total Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	99,238	104,522
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	59,543	62,713
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	69,489	72,538
Total Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%
Summit Community [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to risk weighted assets), Actual Amount	148,803	142,329
Tier I Capital (to risk weighted assets), Actual Amount	136,231	129,058
Tier I Capital (to average assets), Actual Amount	136,231	129,058
Total Capital (to risk weighted assets), Actual Ratio	15.00%	13.60%
Tier I Capital (to risk weighted assets), Actual Ratio	13.70%	12.30%
Tier I Capital (to average assets), Actual Ratio	9.80%	8.90%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	79,484	83,604
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	39,742	41,802
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	55,581	57,995
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Ratio	8.00%	8.00%
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Ratio	4.00%	4.00%
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Ratio	4.00%	4.00%
Total Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	99,354	104,505
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	59,613	62,703
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	$ 69,476	$ 72,493
Total Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%