13. Regulatory Matters (Summary Of Actual Capital Amounts And Ratios) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Summit [Member]
Total Capital (to risk weighted assets), Actual Amount	$ 143,494	$ 138,593
Tier I Capital (to risk weighted assets), Actual Amount	120,221	115,221
Tier I Capital (to average assets), Actual Amount	120,221	115,221
Total Capital (to risk weighted assets), Actual Ratio	14.50%	14.00%
Tier I Capital (to risk weighted assets), Actual Ratio	12.10%	11.60%
Tier I Capital (to average assets), Actual Ratio	8.90%	8.30%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	79,423	79,391
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	39,712	39,695
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	54,291	55,591
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	99,279	99,238
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	59,567	59,543
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	67,863	69,489
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]
Total Capital (to risk weighted assets), Actual Amount	154,155	148,803
Tier I Capital (to risk weighted assets), Actual Amount	141,682	136,231
Tier I Capital (to average assets), Actual Amount	141,682	136,231
Total Capital (to risk weighted assets), Actual Ratio	15.50%	15.00%
Tier I Capital (to risk weighted assets), Actual Ratio	14.30%	13.70%
Tier I Capital (to average assets), Actual Ratio	10.40%	9.80%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	79,497	79,484
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	39,748	39,742
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	54,336	55,581
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	99,371	99,354
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	59,623	59,613
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	$ 67,920	$ 69,476
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%