Schedule of Regulatory Capital Requirements (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1(Core) capital to adjusted total assets required under cease and desist order, ratio	8.00%	8.00%
Total capital to risk weighted assets required under cease and desist order, ratio	12.00%	12.00%
Tier 1(Core) capital to adjusted total assets required under cease and desist order	$ 29,043	$ 29,881
Total capital to risk weighted assets required under cease and desist order	28,137	30,135
Tier 1(Core) capital to adjusted total assets required to be well capitalized under prompt corrective action regulations, ratio	5.00%	5.00%
Tier 1(Core) capital to risk weighted assets required to be capitalized under prompt corrective action regulations, ratio	6.00%	6.00%
Total capital to risk weighted assets required to be well capitalized under prompt corrective action regulations, ratio	10.00%	10.00%
Tier 1(Core) capital to adjusted total assets required to be well capitalized under prompt corrective action regulations	18,152	18,675
Tier 1(Core) capital to risk weighted assets required to be well capitalized under prompt corrective action regulations	14,068	15,067
Total capital to risk weighted assets required to be well capitalized under prompt corrective action regulations	23,447	25,112
Tangible capital required for capital adequacy purposes, ratio	1.50%	1.50%
Tier 1(Core) capital to adjusted total assets required for capital adequacy purposes, ratio	4.00%	4.00%
Total capital to risk weighted assets required for capital adequacy purposes, ratio	8.00%	8.00%
Tangible capital required to be well capitalized under prompt corrective actions regulations	5,446	5,603
Tier 1(Core) capital to adjusted total assets required for capital adequacy purposes	14,522	14,940
Total capital to risk weighted assets required for capital adequacy purposes	18,758	20,090
Tangible capital to adjusted total assets, ratio	9.00%	8.82%
Tier 1(Core) capital to adjusted total assets, ratio	9.00%	8.82%
Tier 1(Core) capital to risk weighted assets, ratio	13.94%	13.12%
Total capital to risk weighted assets, ratio	15.22%	14.41%
Tangible capital to adjusted total assets	32,674	32,936
Tier 1(Core) capital to adjusted total assets	32,674	32,936
Tier 1(Core) capital to risk weighted assets	32,674	32,936
Total capital to risk weighted assets	$ 35,698	$ 36,183

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The amount of total capital as defined in the regulations.

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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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The minimum amount of Tangible Capital divided by tangible assets (Tangible Capital Ratio) as defined in the regulations.

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

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Tier 1 Risk Based Capital 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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