Regulatory Capital Requirements - Actual and Statutory Required Capital Amounts and Ratios (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Home Savings
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Risk-based capital, Actual Amount	$ 233,544	$ 233,974
Tier 1 capital to risk-weighted assets, Actual Amount	219,252	220,080
Common equity Tier 1 capital to risk-weighted assets, Actual Amount	219,252
Tier 1 capital to average total assets, Actual Amount	219,252	220,080
Total risk-based capital to risk-weighted assets, Actual Ratio	20.48%	21.13%
Tier 1 capital to risk-weighted assets, Actual Ratio	19.23%	19.87%
Common equity Tier 1 capital to risk-weighted assets, Actual Ratio	19.23%
Tier 1 capital to average total assets, Actual Ratio	11.99%	12.11%
Total risk-based capital to risk-weighted assets, Minimum Capital Amount	91,235	88,602
Tier 1 capital to risk-weighted assets, Minimum Capital Amount	68,426
Common equity Tier 1 capital to risk-weighted assets, Minimum Capital Amount	51,320
Tier 1 capital to average total assets, Minimum Capital Amount	74,056	72,674
Total risk-based capital to risk-weighted assets, Minimum Capital Ratio	8.00%	8.00%
Tier 1 capital to risk-weighted assets, Minimum Capital Ratio	6.00%
Common equity Tier 1 capital to risk-weighted assets, Minimum Capital Ratio	4.50%
Tier 1 capital to average total assets, Minimum Capital Ratio	4.00%	4.00%
Total risk-based capital to risk-weighted assets, To Be Well Capitalized Amount	114,044	110,752
Tier 1 capital to risk-weighted assets, To Be Well Capitalized Amount	91,235	66,451
Common equity Tier 1 capital to risk-weighted assets, To Be Well Capitalized Amount	74,128
Tier 1 capital to average total assets, To Be Well Capitalized Amount	92,570	90,843
Total risk-based capital to risk-weighted assets, To Be Well Capitalized Ratio	10.00%	10.00%
Tier 1 capital to risk-weighted assets, To Be Well Capitalized Ratio	8.00%	6.00%
Common equity Tier 1 capital to risk-weighted assets, To Be Well Capitalized Ratio	6.50%
Tier 1 capital to average total assets, To Be Well Capitalized Ratio	5.00%	5.00%
United Community
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Risk-based capital, Actual Amount	253,336
Tier 1 capital to risk-weighted assets, Actual Amount	239,028
Common equity Tier 1 capital to risk-weighted assets, Actual Amount	239,028
Tier 1 capital to average total assets, Actual Amount	239,028
Total risk-based capital to risk-weighted assets, Actual Ratio	22.19%
Tier 1 capital to risk-weighted assets, Actual Ratio	20.94%
Common equity Tier 1 capital to risk-weighted assets, Actual Ratio	20.94%
Tier 1 capital to average total assets, Actual Ratio	13.07%
Total risk-based capital to risk-weighted assets, Minimum Capital Amount	91,336
Tier 1 capital to risk-weighted assets, Minimum Capital Amount	68,502
Common equity Tier 1 capital to risk-weighted assets, Minimum Capital Amount	51,376
Tier 1 capital to average total assets, Minimum Capital Amount	74,137
Total risk-based capital to risk-weighted assets, Minimum Capital Ratio	8.00%
Tier 1 capital to risk-weighted assets, Minimum Capital Ratio	6.00%
Common equity Tier 1 capital to risk-weighted assets, Minimum Capital Ratio	4.50%
Tier 1 capital to average total assets, Minimum Capital Ratio	4.00%
Total risk-based capital to risk-weighted assets, To Be Well Capitalized Amount	114,170
Tier 1 capital to risk-weighted assets, To Be Well Capitalized Amount	91,336
Common equity Tier 1 capital to risk-weighted assets, To Be Well Capitalized Amount	74,210
Tier 1 capital to average total assets, To Be Well Capitalized Amount	$ 92,672
Total risk-based capital to risk-weighted assets, To Be Well Capitalized Ratio	10.00%
Tier 1 capital to risk-weighted assets, To Be Well Capitalized Ratio	8.00%
Common equity Tier 1 capital to risk-weighted assets, To Be Well Capitalized Ratio	6.50%
Tier 1 capital to average total assets, To Be Well Capitalized Ratio	5.00%

Excess tier one risk based capital required for capital adequacy.

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Excess tier one risk based capital required for capital adequacy to risk weighted assets.

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Excess tier one risk based capital required to be well capitalized.

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Excess tier one risk based capital required to be well capitalized to risk weighted assets.

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The amount of total capital as defined in the regulations.

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

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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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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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The amount by which the company's Tier 1 Risk Based Capital exceeds the minimum required for capital adequacy purposes.

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The amount of excess Tier 1 Risk Based Capital (which consists of the types of financial capital considered the most reliable and liquid, primarily Shareholders' equity. Examples of Tier 1 capital are common stock or unit, preferred stock or unit that is irredeemable and noncumulative, and retained earnings) divided by risk-weighted assets which are assets that are weighted for credit risk according to a formula used by the Reserve Bank.

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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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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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The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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

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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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The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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

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