Regulatory Matters (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012	Jun. 30, 2012 Summit [Member]	Dec. 31, 2011 Summit [Member]	Jun. 30, 2012 Summit Community [Member]	Dec. 31, 2011 Summit Community [Member]	Jun. 30, 2012 Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to risk weighted assets), Actual Amount		$ 138,013	$ 136,060	$ 145,218	$ 142,329
Tier I Capital (to risk weighted assets), Actual Amount		112,359	109,989	132,364	129,058
Tier I Capital (to average assets), Actual Amount		112,359	109,989	132,364	129,058
Total Capital (to risk weighted assets), Actual Ratio		13.60%	13.00%	14.30%	13.60%
Tier I Capital (to risk weighted assets), Actual Ratio		11.10%	10.50%	13.10%	12.30%
Tier I Capital (to average assets), Actual Ratio		7.90%	7.60%	9.30%	8.90%
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount		81,056	83,617	81,127	83,604
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Amount		40,528	41,809	40,564	41,802
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Amount		57,017	58,031	56,809	57,995
Total Capital (to risk weighted assets), Minimum Required Regulatory Capital, Ratio		8.00%	8.00%	8.00%	8.00%	11.00%
Tier I Capital (to risk weighted assets), Minimum Required Regulatory Capital, Ratio		4.00%	4.00%	4.00%	4.00%
Tier I Capital (to average assets), Minimum Required Regulatory Capital, Ratio		4.00%	4.00%	4.00%	4.00%	8.00%
Total Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount		101,320	104,522	101,409	104,505
Tier I Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount		60,792	62,713	60,845	62,703
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Amount		$ 71,272	$ 72,538	$ 71,011	$ 72,493
Total Capital (to risk weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio		10.00%	10.00%	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%	6.00%	6.00%
Tier I Capital (to average assets), To be Well Capitalized under Prompt Corrective Action Provisions, Ratio		5.00%	5.00%	5.00%	5.00%
Regulatory authority prior period notice, to declare cash dividend, days	30

Regulatory authority prior period notice, to declare cash dividend, days

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The amount of total capital as defined in the regulations.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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