Loans Receivable - Schedule of Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total residential real estate	$ 429,967	$ 423,959
Total commercial real estate	101,545	103,337
Subtotal mortgage loans	531,512	527,296
Total consumer loans	139,988	136,142
Commercial business	55,071	52,801
Subtotal other loans	195,059	188,943
Total loans receivable	726,571	716,239
Allowance for loan losses	6,816	6,805
Deferred loan fees and net discounts	(2,329)	(2,007)
Loans in process	12,711	15,805
Subtotal	17,198	20,603
Net loans receivable	709,373	695,636
Residential Real Estate, Single Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total residential real estate	347,223	341,775
Total loans receivable	347,223	341,775
Residential Real Estate, Multi-Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total residential real estate	42,154	37,857
Total loans receivable	42,154	37,857
Residential Real Estate, Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total residential real estate	40,590	44,327
Total loans receivable	40,590	44,327
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total commercial real estate	91,310	77,366
Total loans receivable	101,545	103,337
Commercial Real Estate, Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total commercial real estate	10,235	25,971
Total loans receivable	10,235	25,971
Consumer Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total consumer loans	84,504	82,987
Total loans receivable	84,504	82,987
Consumer Dealer Auto and RV Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total consumer loans	49,437	46,502
Total loans receivable	49,437	46,502
Consumer Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total consumer loans	6,047	6,653
Total loans receivable	$ 6,047	$ 6,653