Note 6: Loans and Allowance For Loan Losses: Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Provision for loan losses	$ 2,300	$ 1,300	$ 4,401	$ 2,600
One-to-Four-Family Residential Construction
Provision for Loan Losses Expensed	(700)	(110)	(649)	446
Financing Receivable, Allowance for Credit Losses, Write-downs	(7)	(80)	(91)	(220)
Allowance for Doubtful Accounts Receivable, Recoveries	8	91	24	205
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	696		696		$ 731
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,853		2,853		3,464
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses			635		705
Financing Receivable, Individually Evaluated for Impairment	6,183		6,183		6,129
Financing Receivable, Collectively Evaluated for Impairment	407,120		407,120		316,052
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	176,851		176,851		194,697
One-to-Four-Family Residential Construction | Beginning of Period
Provision for loan losses	4,883	3,985	4,900	3,455
One-to-Four-Family Residential Construction | End of Period
Provision for loan losses	4,184	3,886	4,184	3,886
Other Residential
Provision for Loan Losses Expensed	1,066	524	484	384
Financing Receivable, Allowance for Credit Losses, Write-downs				(2)
Allowance for Doubtful Accounts Receivable, Recoveries	11	9	24	19
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,610		3,610		3,122
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses			88		68
Financing Receivable, Individually Evaluated for Impairment	7,511		7,511		9,533
Financing Receivable, Collectively Evaluated for Impairment	514,180		514,180		410,016
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	33,363		33,363		35,945
Other Residential | Beginning of Period
Provision for loan losses	2,621	2,809	3,190	2,941
Other Residential | End of Period
Provision for loan losses	3,698	3,342	3,698	3,342
Commercial Real Estate
Provision for Loan Losses Expensed	2,696	(146)	3,984	239
Financing Receivable, Allowance for Credit Losses, Write-downs	(1,422)	(2)	(3,731)	(4)
Allowance for Doubtful Accounts Receivable, Recoveries	1,155	123	1,166	183
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	3,080		3,080		2,556
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	12,875		12,875		11,888
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses			202		294
Financing Receivable, Individually Evaluated for Impairment	26,776		26,776		34,629
Financing Receivable, Collectively Evaluated for Impairment	1,126,832		1,126,832		1,008,845
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	59,341		59,341		73,148
Commercial Real Estate | Beginning of Period
Provision for loan losses	13,728	20,216	14,738	19,773
Commercial Real Estate | End of Period
Provision for loan losses	16,157	20,191	16,157	20,191
Commercial Construction
Provision for Loan Losses Expensed	(143)	(77)	(14)	(190)
Financing Receivable, Allowance for Credit Losses, Write-downs			(30)	(197)
Allowance for Doubtful Accounts Receivable, Recoveries	30	9	38	113
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,442		1,442		1,391
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,511		1,511		1,570
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses			60		58
Financing Receivable, Individually Evaluated for Impairment	7,464		7,464		7,555
Financing Receivable, Collectively Evaluated for Impairment	761,695		761,695		651,679
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	4,180		4,180		4,981
Commercial Construction | Beginning of Period
Provision for loan losses	3,126	3,356	3,019	3,562
Commercial Construction | End of Period
Provision for loan losses	3,013	3,288	3,013	3,288
Commercial Business
Provision for Loan Losses Expensed	(114)	423	(668)	890
Financing Receivable, Allowance for Credit Losses, Write-downs	(173)	(551)	(192)	(775)
Allowance for Doubtful Accounts Receivable, Recoveries	141	175	188	198
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	947		947		1,115
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,416		2,416		2,862
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses			168		226
Financing Receivable, Individually Evaluated for Impairment	1,989		1,989		2,365
Financing Receivable, Collectively Evaluated for Impairment	398,678		398,678		392,577
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	8,463		8,463		10,500
Commercial Business | Beginning of Period
Provision for loan losses	3,677	3,945	4,203	3,679
Commercial Business | End of Period
Provision for loan losses	3,531	3,992	3,531	3,992
Consumer
Provision for Loan Losses Expensed	(505)	686	1,264	831
Financing Receivable, Allowance for Credit Losses, Write-downs	(1,762)	(935)	(3,499)	(2,082)
Allowance for Doubtful Accounts Receivable, Recoveries	826	488	1,686	1,225
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	356		356		300
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	7,012		7,012		7,647
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses			182		152
Financing Receivable, Individually Evaluated for Impairment	2,331		2,331		1,950
Financing Receivable, Collectively Evaluated for Impairment	657,380		657,380		596,740
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	40,327		40,327		43,574
Consumer | Beginning of Period
Provision for loan losses	8,991	4,760	8,099	5,025
Consumer | End of Period
Provision for loan losses	7,550	4,999	7,550	4,999
Loans Receivable
Provision for Loan Losses Expensed	2,300	1,300	4,401	2,600
Financing Receivable, Allowance for Credit Losses, Write-downs	(3,364)	(1,568)	(7,543)	(3,280)
Allowance for Doubtful Accounts Receivable, Recoveries	2,171	895	3,126	1,943
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	6,521		6,521		6,093
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	30,277		30,277		30,553
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses			1,335		1,503
Financing Receivable, Individually Evaluated for Impairment	52,254		52,254		62,161
Financing Receivable, Collectively Evaluated for Impairment	3,865,885		3,865,885		3,375,909
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	322,525		322,525		$ 362,845
Loans Receivable | Beginning of Period
Provision for loan losses	37,026	39,071	38,149	38,435
Loans Receivable | End of Period
Provision for loan losses	$ 38,133	$ 39,698	$ 38,133	$ 39,698