13. Regulatory Matters (Summary Of Actual Capital Amounts And Ratios) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Summit [Member]
Total Capital (to risk weighted assets), Actual Amount	$ 141,165	$ 138,593
Tier I Capital (to risk weighted assets), Actual Amount	118,050	115,221
Tier I Capital (to average assets), Actual Amount	118,050	115,221
Total Capital (to risk weighted assets), Actual Ratio	14.40%	14.00%
Tier I Capital (to risk weighted assets), Actual Ratio	12.10%	11.60%
Tier I Capital (to average assets), Actual Ratio	8.60%	8.30%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	78,195	79,391
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	39,098	39,695
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	55,121	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	97,744	99,238
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	58,647	59,543
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	68,901	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	152,323	148,803
Tier I Capital (to risk weighted assets), Actual Amount	140,008	136,231
Tier I Capital (to average assets), Actual Amount	140,008	136,231
Total Capital (to risk weighted assets), Actual Ratio	15.60%	15.00%
Tier I Capital (to risk weighted assets), Actual Ratio	14.30%	13.70%
Tier I Capital (to average assets), Actual Ratio	10.20%	9.80%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	78,283	79,484
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	39,142	39,742
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	55,121	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	97,854	99,354
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	58,713	59,613
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	$ 68,902	$ 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%