Note 4: Loans and Allowance for Loan Losses (Detail) - Allowance for Loan Losses Activity (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Allowance for loan losses:
Balance	$ 10,974,000	$ 12,909,000	$ 10,613,145	$ 13,083,000
Provision charged to expense	2,100,000	1,000,000	3,000,000	1,900,000
Losses charged off	(35,000)	(38,000)	(640,000)	(2,406,000)
Recoveries	87,000	77,000	153,000	1,371,000
Balance	13,126,138	13,948,000	13,126,138	13,948,000
Real Estate Construction [Member]
Allowance for loan losses:
Balance	3,239,000	5,291,000	2,508,000	4,547,000
Provision charged to expense	(877,000)	(250,000)	(156,000)	554,000
Losses charged off		(6,000)		(76,000)
Recoveries	6,000	1,000	16,000	11,000
Balance	2,368,000	5,036,000	2,368,000	5,036,000
Real Estate Commercial [Member]
Allowance for loan losses:
Balance	2,620,000	1,926,000	2,725,000	3,125,000
Provision charged to expense	1,736,000	1,113,000	2,095,000	1,386,000
Losses charged off			(478,000)	(1,475,000)
Recoveries	24,000	14,000	38,000	17,000
Balance	4,380,000	3,053,000	4,380,000	3,053,000
One to Four Family Units [Member]
Allowance for loan losses:
Balance	1,606,000	1,966,000	1,735,000	1,713,000
Provision charged to expense	(34,000)	188,000	(58,000)	706,000
Losses charged off			(108,000)	(265,000)
Recoveries	2,000	2,000	5,000	2,000
Balance	1,574,000	2,156,000	1,574,000	2,156,000
Multi-Family Units [Member]
Allowance for loan losses:
Balance	389,000	521,000	390,000	528,000
Provision charged to expense	26,000	1,000	25,000	(6,000)
Balance	415,000	522,000	415,000	522,000
Commercial Loans [Member]
Allowance for loan losses:
Balance	1,816,000	2,011,000	1,948,000	2,483,000
Provision charged to expense	2,156,000	224,000	1,993,000	236,000
Losses charged off	(20,000)	(8,000)	(20,000)	(526,000)
Recoveries	45,000	43,000	76,000	77,000
Balance	3,997,000	2,270,000	3,997,000	2,270,000
Consumer and Other Loans [Member]
Allowance for loan losses:
Balance	387,000	409,000	372,000	687,000
Provision charged to expense	(25,000)	68,000	1,000	(1,417,000)
Losses charged off	(15,000)	(24,000)	(34,000)	(64,000)
Recoveries	10,000	17,000	18,000	1,264,000
Balance	357,000	470,000	357,000	470,000
Unallocated [Member]
Allowance for loan losses:
Balance	917,000	785,000	935,000
Provision charged to expense	(882,000)	(344,000)	(900,000)	441,000
Balance	$ 35,000	$ 441,000	$ 35,000	$ 441,000