Real Estate and Other Assets Owned - Presentation of Balances in Other Real Estate Owned and Non-Accrual Loans Consisting Other Non-Performing Loan (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total other real estate owned	$ 1,490	$ 1,674	$ 1,632	$ 1,548
Total non-accrual loans	8,735	10,066	11,812
Total non-performing assets	10,225	11,740	13,444
Non-performing assets / Total assets	1.08%	1.21%	1.42%
One-to-Four Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total other real estate owned	356	350	447	258
Total non-accrual loans	524	945	1,131
Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total other real estate owned	934	1,124	1,112	1,112
Total non-accrual loans	1,217	1,218	2,255
Non-Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total other real estate owned	200	200	73	44
Total non-accrual loans	$ 6,520	$ 6,546	$ 7,055