Regulatory Capital Requirements - Components of Regulatory Capital (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]
Total shareholders' equity	$ 225,314	$ 217,372
Accumulated other comprehensive income	16,126	20,015
Intangible assets	(28)	(84)
Disallowed deferred tax assets	(22,160)	(17,223)
Tier 1 Capital	219,252	220,080
Allowance for loan losses and allowance for unfunded lending commitments limited to 1.25% of total risk-weighted assets	14,292	13,894
Total risk-based capital	233,544	233,974
United Community
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total shareholders' equity	247,104
Accumulated other comprehensive income	16,108
Intangible assets	(28)
Disallowed deferred tax assets	(24,156)
Tier 1 Capital	239,028
Allowance for loan losses and allowance for unfunded lending commitments limited to 1.25% of total risk-weighted assets	14,308
Total risk-based capital	$ 253,336