Note 7: Loans and Allowance For Loan Losses: Schedule of Impaired Loans Average Investment and Interest Income Recognized (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
One- to four-family residential construction
Loans and Leases Receivable, Impaired, Average Investment	$ 612	$ 2,334	$ 738	$ 2,033	$ 1,939
Loans and Leases Receivable, Impaired, Interest Income Recognized	17	16	39	34	39
Subdivision construction
Loans and Leases Receivable, Impaired, Average Investment	3,188	11,260	10,225	9,692	10,154
Loans and Leases Receivable, Impaired, Interest Income Recognized	153	97	440	212	282
Land development
Loans and Leases Receivable, Impaired, Average Investment	15,826	7,034	12,286	10,846	9,983
Loans and Leases Receivable, Impaired, Interest Income Recognized	408	68	889	301	379
Commercial construction
Loans and Leases Receivable, Impaired, Average Investment	1,020		510	411	308
Loans and Leases Receivable, Impaired, Interest Income Recognized			35
Owner occupied one- to four-family residential
Loans and Leases Receivable, Impaired, Average Investment	4,970	4,399	5,094	4,512	4,748
Loans and Leases Receivable, Impaired, Interest Income Recognized	208	21	370	55	76
Non-owner occupied one- to four-family residential
Loans and Leases Receivable, Impaired, Average Investment	10,389	8,603	10,854	9,497	9,658
Loans and Leases Receivable, Impaired, Interest Income Recognized	289	84	743	285	425
Commercial real estate
Loans and Leases Receivable, Impaired, Average Investment	42,607	34,181	44,223	28,915	34,403
Loans and Leases Receivable, Impaired, Interest Income Recognized	1,742	659	3,266	1,120	1,616
Other residential
Loans and Leases Receivable, Impaired, Average Investment	17,718	8,288	17,408	10,118	9,475
Loans and Leases Receivable, Impaired, Interest Income Recognized	686	53	1,267	244	454
Commercial business
Loans and Leases Receivable, Impaired, Average Investment	3,290	2,560	3,927	4,363	4,173
Loans and Leases Receivable, Impaired, Interest Income Recognized	119	18	279	80	125
Industrial revenue bonds
Loans and Leases Receivable, Impaired, Average Investment	3,267	2,110	3,117	2,145	2,137
Consumer auto
Loans and Leases Receivable, Impaired, Average Investment	154	116	163	213	192
Loans and Leases Receivable, Impaired, Interest Income Recognized	12	1	24	5	6
Consumer other
Loans and Leases Receivable, Impaired, Average Investment	679	473	662	544	544
Loans and Leases Receivable, Impaired, Interest Income Recognized	60	1	122	8	10
Home equity lines of credit
Loans and Leases Receivable, Impaired, Average Investment	134	184	136	239	227
Loans and Leases Receivable, Impaired, Interest Income Recognized	9		15	1	1
Total loans
Loans and Leases Receivable, Impaired, Average Investment	103,854	81,542	109,343	83,528	87,941
Loans and Leases Receivable, Impaired, Interest Income Recognized	$ 3,703	$ 1,018	$ 7,489	$ 2,345	$ 3,413