Note 4: Loans and Allowance for Loan Losses (Detail) - Recorded Investment in Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Allowance for loan losses:
Allowance for loan losses ending balance: individually evaluated for impairment	$ 1,267	$ 2,612
Allowance for loan losses ending balance: collectively evaluated for impairment	7,209	8,001
Loans:
Loans ending balance: individually evaluated for impairment	20,149	19,054
Loans ending balance: collectively evaluated for impairment	450,420	470,757
Real Estate Construction [Member]
Allowance for loan losses:
Allowance for loan losses ending balance: individually evaluated for impairment	454	1,355
Allowance for loan losses ending balance: collectively evaluated for impairment	1,351	1,153
Loans:
Loans ending balance: individually evaluated for impairment	5,742	8,515
Loans ending balance: collectively evaluated for impairment	39,533	36,397
Real Estate Commercial [Member]
Allowance for loan losses:
Allowance for loan losses ending balance: individually evaluated for impairment	313	659
Allowance for loan losses ending balance: collectively evaluated for impairment	2,185	2,066
Loans:
Loans ending balance: individually evaluated for impairment	7,460	5,019
Loans ending balance: collectively evaluated for impairment	158,323	189,837
One to Four Family Units [Member]
Allowance for loan losses:
Allowance for loan losses ending balance: individually evaluated for impairment	97	127
Allowance for loan losses ending balance: collectively evaluated for impairment	1,215	1,608
Loans:
Loans ending balance: individually evaluated for impairment	2,744	1,819
Loans ending balance: collectively evaluated for impairment	97,402	96,212
Multi-Family Units [Member]
Allowance for loan losses:
Allowance for loan losses ending balance: collectively evaluated for impairment	279	390
Loans:
Loans ending balance: collectively evaluated for impairment	45,097	43,166
Commercial Loans [Member]
Allowance for loan losses:
Allowance for loan losses ending balance: individually evaluated for impairment	355	399
Allowance for loan losses ending balance: collectively evaluated for impairment	1,083	1,549
Loans:
Loans ending balance: individually evaluated for impairment	3,726	3,048
Loans ending balance: collectively evaluated for impairment	90,126	85,040
Consumer and Other Loans [Member]
Allowance for loan losses:
Allowance for loan losses ending balance: individually evaluated for impairment	48	72
Allowance for loan losses ending balance: collectively evaluated for impairment	245	300
Loans:
Loans ending balance: individually evaluated for impairment	477	653
Loans ending balance: collectively evaluated for impairment	19,939	20,105
Unallocated [Member]
Allowance for loan losses:
Allowance for loan losses ending balance: collectively evaluated for impairment	$ 851	$ 935