The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Name Accounting Standards Codification

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Loans - Summary of Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, individually evaluated for impairment	$ 4,377	$ 4,483
Loans, collectively evaluated for impairment	54,792	57,167
Loans, recorded investment	59,169	61,650
Allowance for loan losses, individually evaluated for impairment	253	325	220
Allowance for loan losses, collectively evaluated for impairment	926	881
Allowance for loan losses, recorded investment	1,179	1,206	1,450	1,302
Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, collectively evaluated for impairment	1,241	1,401
Loans, recorded investment	1,241	1,401
Allowance for loan losses, collectively evaluated for impairment	62	66
Allowance for loan losses, recorded investment	62	66
Land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, collectively evaluated for impairment	208	213
Loans, recorded investment	208	213
Allowance for loan losses, collectively evaluated for impairment	6	6
Allowance for loan losses, recorded investment	6	6
One-To-Four-Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, individually evaluated for impairment	1,363	1,403
Loans, collectively evaluated for impairment	29,436	30,027
Loans, recorded investment	30,799	31,430
Allowance for loan losses, individually evaluated for impairment	45	78	147
Allowance for loan losses, collectively evaluated for impairment	325	314
Allowance for loan losses, recorded investment	370	392
Multi-Family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, individually evaluated for impairment	2,937	2,985
Loans, collectively evaluated for impairment	6,780	6,849
Loans, recorded investment	9,717	9,834
Allowance for loan losses, individually evaluated for impairment	208	247	73
Allowance for loan losses, collectively evaluated for impairment	132	107
Allowance for loan losses, recorded investment	340	354
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, collectively evaluated for impairment	9,580	10,324
Loans, recorded investment	9,580	10,324
Allowance for loan losses, collectively evaluated for impairment	288	277
Allowance for loan losses, recorded investment	288	277
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, collectively evaluated for impairment	6,511	7,360
Loans, recorded investment	6,511	7,360
Allowance for loan losses, collectively evaluated for impairment	92	96
Allowance for loan losses, recorded investment	92	96
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, individually evaluated for impairment	77	95
Loans, collectively evaluated for impairment	619	731
Loans, recorded investment	696	826
Allowance for loan losses, collectively evaluated for impairment	7	8
Allowance for loan losses, recorded investment	7	8
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, collectively evaluated for impairment	1	2
Loans, recorded investment	1	2
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, collectively evaluated for impairment	416	260
Loans, recorded investment	416	260
Allowance for loan losses, collectively evaluated for impairment	14	7
Allowance for loan losses, recorded investment	$ 14	$ 7