Shareholders' Equity and Regulatory Capital Regulatory Capital (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tangible capital	$ 99,279	$ 94,502
Tangible capital to adjusted total assets	8.81%	8.26%
Tangible Capital Required for Capital Adequacy	16,896	17,151
Tangible Capital Required for Capital Adequacy to Adjusted Total Assets	1.50%	1.50%
Tangible Capital Required to be Well Captialized	22,527	22,868
Tangible Capital Required to be Well Capitalized to Adjusted Total Assets	2.00%	2.00%
Tier 1 (Core) Capital	99,279	94,502
Tier 1 (Core) capital to adjusted total assets	8.81%	8.26%
Tier 1 (Core) Capital Adjusted Assets Required for Capital Adequacy	45,055	45,737
Tier 1 (Core) Capital Required For Capital Adequacy to Adjusted Total Assets	4.00%	4.00%
Tier 1 (Core) Capital Required to be Well Capitalized	56,319	57,171
Tier 1 (Core) Capital Required to be Well Capitalized to Adjusted Total Assets	5.00%	5.00%
Tier 1 (Core) Capital	99,279	94,502
Tier 1 (Core) capital to risk-weighted assets	12.81%	11.40%
Tier 1 Risk-Based Capital Required for Capital Adequacy	31,008	33,168
Tier 1 Risk-Based Capital Required for Capital Adequacy to Risk-Weighted Assets	4.00%	4.00%
Tier 1 Risk-Based Capital Required to be Well Capitalized	46,512	49,752
Tier 1 Risk-Based Capital Required to be Well Capitalized to Risk-Weighted Assets	6.00%	6.00%
Total Capital	109,000	104,892
Total capital to risk-weighted assets	14.06%	12.65%
Capital Required for Capital Adequacy	62,016	66,336
Capital Required for Capital Adequacy to Risk-Weighted Assets	8.00%	8.00%
Capital Required to be Well Capitalized	77,520	82,920
Capital Required to be Well Capitalized to Risk-Weighted Assets	10.00%	10.00%
Minimum Tier 1 (Core) Capital to Adjusted Total Assets Ratio the Bank Must Maintain Established by the OCC	8.00%
Minimum Total Risk Based Capital to Risk Weighted Assets Ratio the Bank Must Maintain Established by the OCC	12.00%
Deferred Tax Assets, Net, Not Included for Regulatory Capital Purposes	$ 8,975	$ 8,638

The amount of net deferred tax assets not included for regulatory capital purposes.

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Represents the minimum total risk-based capital to risk-weighted assets ratio the Bank must maintain which was established by the OCC specifically for the Bank.

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The minimum amount of tangible capital divided by adjusted total assets as defined by the regulations.

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

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The minimum amount of tangible capital (adjusted total assets) required 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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Tangible capital as defined in the regulations (generally includes outstanding stock plus retained earnings) for banking institutions subject to Office of Thrift Supervision (OTS) capital requirements.

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The minimum amount of tangible capital required 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 amount of Tier 1 Leverage Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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Tier 1 Risk Based Capital as defined in the regulations.

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The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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