13. Regulatory Matters (Summary Of Actual Capital Amounts And Ratios) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Ratio	11.00%
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Ratio	8.00%
Summit [Member]
Total Capital (to risk weighted assets), Actual Amount	$ 144,071	$ 144,202
Tier I Capital (to risk weighted assets), Actual Amount	125,202	122,918
Tier I Capital (to average assets), Actual Amount	125,202	122,918
Total Capital (to risk weighted assets), Actual Ratio	14.20%	14.50%
Tier I Capital (to risk weighted assets), Actual Ratio	12.40%	12.40%
Tier I Capital (to average assets), Actual Ratio	9.00%	8.90%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	81,024	79,638
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	40,512	39,499
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	55,399	55,151
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	101,280	99,547
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	60,768	59,248
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	69,249	68,938
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	157,724	156,473
Tier I Capital (to risk weighted assets), Actual Amount	146,655	143,989
Tier I Capital (to average assets), Actual Amount	146,655	143,989
Total Capital (to risk weighted assets), Actual Ratio	15.60%	15.70%
Tier I Capital (to risk weighted assets), Actual Ratio	14.50%	14.50%
Tier I Capital (to average assets), Actual Ratio	10.60%	10.40%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	80,974	79,627
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount	40,487	39,814
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount	55,394	55,150
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	101,217	99,534
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	60,730	59,720
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount	$ 69,242	$ 68,938
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%