Note 6: Loans and Allowance For Loan Losses: Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Provision for loan losses	$ 2,101	$ 1,300
One-to-Four-Family Residential Construction
Provision for Loan Losses Expensed	51	556
Financing Receivable, Allowance for Credit Losses, Write-downs	(84)	(140)
Allowance for Doubtful Accounts Receivable, Recoveries	16	114
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	729		$ 731
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,481		3,464
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	673		705
Financing Receivable, Individually Evaluated for Impairment	6,162		6,129
Financing Receivable, Collectively Evaluated for Impairment	427,010		316,052
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	187,210		194,697
One-to-Four-Family Residential Construction | Beginning of Period
Provision for loan losses	4,900	3,455
One-to-Four-Family Residential Construction | End of Period
Provision for loan losses	4,883	3,985
Other Residential
Provision for Loan Losses Expensed	(582)	(140)
Financing Receivable, Allowance for Credit Losses, Write-downs		(3)
Allowance for Doubtful Accounts Receivable, Recoveries	13	11
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,532		3,122
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	89		68
Financing Receivable, Individually Evaluated for Impairment	9,472		9,533
Financing Receivable, Collectively Evaluated for Impairment	405,645		410,016
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	35,608		35,945
Other Residential | Beginning of Period
Provision for loan losses	3,190	2,941
Other Residential | End of Period
Provision for loan losses	2,621	2,809
Commercial Real Estate
Provision for Loan Losses Expensed	1,288	385
Financing Receivable, Allowance for Credit Losses, Write-downs	(2,309)	(2)
Allowance for Doubtful Accounts Receivable, Recoveries	11	60
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,900		2,556
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	11,586		11,888
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	242		294
Financing Receivable, Individually Evaluated for Impairment	31,654		34,629
Financing Receivable, Collectively Evaluated for Impairment	1,016,526		1,008,845
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	64,924		73,148
Commercial Real Estate | Beginning of Period
Provision for loan losses	14,738	19,773
Commercial Real Estate | End of Period
Provision for loan losses	13,728	20,216
Commercial Construction
Provision for Loan Losses Expensed	129	(113)
Financing Receivable, Allowance for Credit Losses, Write-downs	(30)	(197)
Allowance for Doubtful Accounts Receivable, Recoveries	8	104
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,141		1,391
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,915		1,570
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	70		58
Financing Receivable, Individually Evaluated for Impairment	7,496		7,555
Financing Receivable, Collectively Evaluated for Impairment	688,448		651,679
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	5,436		4,981
Commercial Construction | Beginning of Period
Provision for loan losses	3,019	3,562
Commercial Construction | End of Period
Provision for loan losses	3,126	3,356
Commercial Business
Provision for Loan Losses Expensed	(554)	467
Financing Receivable, Allowance for Credit Losses, Write-downs	(19)	(224)
Allowance for Doubtful Accounts Receivable, Recoveries	47	23
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,120		1,115
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,373		2,862
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	184		226
Financing Receivable, Individually Evaluated for Impairment	2,215		2,365
Financing Receivable, Collectively Evaluated for Impairment	386,618		392,577
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	9,075		10,500
Commercial Business | Beginning of Period
Provision for loan losses	4,203	3,679
Commercial Business | End of Period
Provision for loan losses	3,677	3,945
Consumer
Provision for Loan Losses Expensed	1,769	145
Financing Receivable, Allowance for Credit Losses, Write-downs	(1,737)	(1,147)
Allowance for Doubtful Accounts Receivable, Recoveries	860	737
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	359		300
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	8,435		7,647
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	197		152
Financing Receivable, Individually Evaluated for Impairment	2,340		1,950
Financing Receivable, Collectively Evaluated for Impairment	640,328		596,740
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	42,068		43,574
Consumer | Beginning of Period
Provision for loan losses	8,099	5,025
Consumer | End of Period
Provision for loan losses	8,991	4,760
Loans Receivable
Provision for Loan Losses Expensed	2,101	1,300
Financing Receivable, Allowance for Credit Losses, Write-downs	(4,179)	(1,713)
Allowance for Doubtful Accounts Receivable, Recoveries	955	1,049
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	5,249		6,093
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	30,322		30,553
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	1,455		1,503
Financing Receivable, Individually Evaluated for Impairment	59,339		62,161
Financing Receivable, Collectively Evaluated for Impairment	3,564,575		3,375,909
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	344,321		$ 362,845
Loans Receivable | Beginning of Period
Provision for loan losses	38,149	38,435
Loans Receivable | End of Period
Provision for loan losses	$ 37,026	$ 39,071