Regulatory Matters (Summary Of Actual Capital Amounts And Ratios) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Summit [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 (to risk weighted assets), Actual Amount	$ 133,498
CET1 (to risk weighted assets), Actual Ratio	11.60%
CET1 (to risk weighted assets), Minimum Required Capital, Amount	$ 80,559
CET1 (to risk weighted assets), Minimum Required Capital, Ratio	7.00%
CET1 (to risk weighted assets), Minimum Required To Be Well Capitalized, Amount	$ 74,805
CET1 (to risk weighted assets), Minimum Required To Be Well Capitalized, Ratio	6.50%
Tier I Capital (to risk weighted assets), Actual Amount	$ 152,498	$ 141,589
Tier I Capital (to risk weighted assets), Actual Ratio	13.20%	13.30%
Tier I Capital (to risk weighted assets), Minimum Required Capital, Amount	$ 98,199	$ 42,583
Tier I Capital (to risk weighted assets), Minimum Required Capital, Ratio	8.50%	4.00%
Tier I Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Amount	$ 92,423	$ 63,875
Tier I Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Ratio	8.00%	6.00%
Total Capital (to risk weighted assets), Actual Amount	$ 163,770	$ 158,196
Total Capital (to risk weighted assets), Actual Ratio	14.20%	14.90%
Total Capital (to risk weighted assets), Minimum Required Capital, Amount	$ 121,098	$ 84,937
Total Capital (to risk weighted assets), Minimum Required Capital, Ratio	10.50%	8.00%
Total Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Amount	$ 115,331	$ 106,172
Total Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Ratio	10.00%	10.00%
Tier I Capital (to average assets), Actual Amount	$ 152,498	$ 141,589
Tier I Capital (to average assets), Actual Ratio	10.40%	9.90%
Tier I Capital (to average assets), Minimum Required Capital, Amount	$ 58,653	$ 57,208
Tier I Capital (to average assets), Minimum Required Capital, Ratio	4.00%	4.00%
Tier I Capital (to average assets), Minimum Required To Be Well Capitalized, Amount	$ 73,316	$ 71,510
Tier I Capital (to average assets), Minimum Required To Be Well Capitalized, Ratio	5.00%	5.00%
Summit Community [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 (to risk weighted assets), Actual Amount	$ 154,024
CET1 (to risk weighted assets), Actual Ratio	13.40%
CET1 (to risk weighted assets), Minimum Required Capital, Amount	$ 80,460
CET1 (to risk weighted assets), Minimum Required Capital, Ratio	7.00%
CET1 (to risk weighted assets), Minimum Required To Be Well Capitalized, Amount	$ 74,713
CET1 (to risk weighted assets), Minimum Required To Be Well Capitalized, Ratio	6.50%
Tier I Capital (to risk weighted assets), Actual Amount	$ 154,024	$ 150,653
Tier I Capital (to risk weighted assets), Actual Ratio	13.40%	14.20%
Tier I Capital (to risk weighted assets), Minimum Required Capital, Amount	$ 97,702	$ 42,437
Tier I Capital (to risk weighted assets), Minimum Required Capital, Ratio	8.50%	4.00%
Tier I Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Amount	$ 91,955	$ 63,656
Tier I Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Ratio	8.00%	6.00%
Total Capital (to risk weighted assets), Actual Amount	$ 165,296	$ 161,820
Total Capital (to risk weighted assets), Actual Ratio	14.40%	15.30%
Total Capital (to risk weighted assets), Minimum Required Capital, Amount	$ 120,528	$ 84,612
Total Capital (to risk weighted assets), Minimum Required Capital, Ratio	10.50%	8.00%
Total Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Amount	$ 114,789	$ 105,765
Total Capital (to risk weighted assets), Minimum Required To Be Well Capitalized, Ratio	10.00%	10.00%
Tier I Capital (to average assets), Actual Amount	$ 154,024	$ 150,653
Tier I Capital (to average assets), Actual Ratio	10.60%	10.60%
Tier I Capital (to average assets), Minimum Required Capital, Amount	$ 58,122	$ 56,850
Tier I Capital (to average assets), Minimum Required Capital, Ratio	4.00%	4.00%
Tier I Capital (to average assets), Minimum Required To Be Well Capitalized, Amount	$ 72,653	$ 71,063
Tier I Capital (to average assets), Minimum Required To Be Well Capitalized, Ratio	5.00%	5.00%