Note 7: Loans and Allowance For Loan Losses: Schedule of Balance in the Allowance for Loan Losses Based on Portfolio Segment and Impairment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended						12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2012 Allowance for loan losses beginning of period	Sep. 30, 2011 Allowance for loan losses beginning of period	Sep. 30, 2012 Allowance for loan losses beginning of period	Sep. 30, 2011 Allowance for loan losses beginning of period	Sep. 30, 2012 Provision charged to expense	Sep. 30, 2011 Provision charged to expense	Sep. 30, 2012 Provision charged to expense	Sep. 30, 2011 Provision charged to expense	Sep. 30, 2012 Losses charged off	Sep. 30, 2011 Losses charged off	Sep. 30, 2012 Losses charged off	Sep. 30, 2011 Losses charged off	Sep. 30, 2012 Recoveries	Sep. 30, 2011 Recoveries	Sep. 30, 2012 Recoveries	Sep. 30, 2011 Recoveries	Sep. 30, 2012 Allowance for loan losses end of period	Sep. 30, 2011 Allowance for loan losses end of period	Sep. 30, 2012 Allowance for loan losses end of period	Sep. 30, 2011 Allowance for loan losses end of period	Sep. 30, 2012 Ending balance individually evaluated for impairment	Sep. 30, 2012 Ending balance collectively evaluated for impairment	Sep. 30, 2012 Loans acquired and accounted for under ASC 310-30	Sep. 30, 2012 Loans Individually evaluated for impairment	Dec. 31, 2011 Loans Individually evaluated for impairment	Sep. 30, 2012 Loans collectively evaluated for impairment	Dec. 31, 2011 Loans collectively evaluated for impairment	Sep. 30, 2012 Loans - loans acquired and accounted for under ASC 310-30	Dec. 31, 2011 Loans - loans acquired and accounted for under ASC 310-30	Dec. 31, 2011 Allowance for loan losses Individually evaluated for impairment	Dec. 31, 2011 Allowance for loan losses collectively evaluated for impairment	Dec. 31, 2011 Allowance for loan losses loans acquired and accounted for under ASC 310-30
Allowance One- to Four-Family Residential and Construction	$ 7,899	$ 11,562	$ 11,424	$ 11,483	$ (724)	$ (784)	$ (1,830)	$ 2,892	$ (245)	$ (836)	$ (2,740)	$ (4,462)	$ 65	$ 7	$ 141	$ 36	$ 6,995	$ 9,949	$ 6,995	$ 9,949	$ 1,700	$ 5,284	$ 11	$ 18,051	$ 39,519	$ 283,024	$ 283,371	$ 285,454	$ 109,909	$ 4,989	$ 6,435
Allowance Other Residential	4,012	3,629	3,088	3,866	348	533	4,206	3,183	(310)	(23)	(3,562)	(2,911)	22	1	340	2	4,072	4,140	4,072	4,140	711	3,361		18,517	20,802	253,754	222,940	58,272	25,877	89	2,999
Allowance Commercial Real Estate	15,592	15,003	18,390	14,336	2,950	7,709	12,265	13,595	(1,579)	(5,104)	(13,784)	(10,374)	448	17	540	68	17,411	17,625	17,411	17,625	3,299	13,993	118	49,052	99,254	646,108	600,353	154,512	157,805	3,584	14,806
Allowance Commercial Construction	6,929	5,155	2,982	5,852	4,227	(3)	17,525	3,475	(6,870)	(2,107)	(16,462)	(6,291)	471	395	712	404	4,757	3,440	4,757	3,440	755	4,002		11,922	27,592	176,653	160,768	1,969	40,215	594	2,358	30
Allowance Commercial Business	3,341	2,324	2,974	3,281	1,512	1,050	2,758	1,058	(648)	(506)	(1,701)	(2,222)	110	153	284	904	4,315	3,021	4,315	3,021	1,541	2,758	16	6,208	10,720	249,233	225,665	18,826	28,784	736	2,238
Allowance Consumer	2,949	2,814	2,374	2,669	87	(5)	1,153	928	(699)	(966)	(1,661)	(2,773)	420	448	891	1,467	2,757	2,291	2,757	2,291	178	2,579	1	1,118	839	209,659	183,183	45,730	33,947	38	2,336
Allowance Total	$ 40,722	$ 40,487	$ 41,232	$ 41,487	$ 8,400	$ 8,500	$ 36,077	$ 25,131	$ (10,351)	$ (9,542)	$ (39,910)	$ (29,033)	$ 1,536	$ 1,021	$ 2,908	$ 2,881	$ 40,307	$ 40,466	$ 40,307	$ 40,466	$ 8,184	$ 31,977	$ 146	$ 104,868	$ 198,726	$ 1,818,431	$ 1,676,280	$ 564,763	$ 396,537	$ 10,030	$ 31,172	$ 30