Note 3: Loans and Allowance For Loan Losses: Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Provision for loan losses	$ 9,281	$ 5,519	$ 4,151
One To Four Family Residential Construction
Provision for Loan Losses Expensed	(2,407)	1,428	(1,025)
Financing Receivable, Allowance for Credit Losses, Write-downs	(229)	(80)	(2,251)
Allowance for Doubtful Accounts Receivable, Recoveries	58	97	496
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	155,378	194,697	234,158
Financing Receivable, Individually Evaluated for Impairment	6,015	6,129	11,488
Financing Receivable, Collectively Evaluated for Impairment	370,172	316,052	288,066
One To Four Family Residential Construction | Beginning of Period
Provision for loan losses	4,900	3,455	6,235
One To Four Family Residential Construction | End of Period
Provision for loan losses	2,322	4,900	3,455
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	570	731	829
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,628	3,464	2,532
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	124	705	94
Other Residential
Provision for Loan Losses Expensed	2,260	193	227
Financing Receivable, Allowance for Credit Losses, Write-downs	(16)	(2)	(1)
Allowance for Doubtful Accounts Receivable, Recoveries	52	58	37
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	29,600	35,945	48,470
Financing Receivable, Individually Evaluated for Impairment	3,812	9,533	9,804
Financing Receivable, Collectively Evaluated for Impairment	659,566	410,016	382,610
Other Residential | Beginning of Period
Provision for loan losses	3,190	2,941	2,678
Other Residential | End of Period
Provision for loan losses	5,486	3,190	2,941
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	5,396	3,122	2,923
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	90	68	18
Commercial Real Estate
Provision for Loan Losses Expensed	5,632	(2,753)	1,855
Financing Receivable, Allowance for Credit Losses, Write-downs	(5,653)	(2,584)	(2,160)
Allowance for Doubtful Accounts Receivable, Recoveries	1,221	302	3,139
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	54,208	73,148	107,278
Financing Receivable, Individually Evaluated for Impairment	10,507	34,629	28,641
Financing Receivable, Collectively Evaluated for Impairment	1,176,399	1,008,845	917,235
Commercial Real Estate | Beginning of Period
Provision for loan losses	14,738	19,773	16,939
Commercial Real Estate | End of Period
Provision for loan losses	15,938	14,738	19,773
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	2,209	2,556	1,751
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	13,507	11,888	16,671
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	222	294	1,351
Commercial Construction
Provision for Loan Losses Expensed	(827)	(619)	(957)
Financing Receivable, Allowance for Credit Losses, Write-downs	(31)	(329)	(126)
Allowance for Doubtful Accounts Receivable, Recoveries	123	405	181
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	2,191	4,981	1,937
Financing Receivable, Individually Evaluated for Impairment	6,023	7,555	7,601
Financing Receivable, Collectively Evaluated for Impairment	825,215	651,679	437,424
Commercial Construction | Beginning of Period
Provision for loan losses	3,019	3,562	4,464
Commercial Construction | End of Period
Provision for loan losses	2,284	3,019	3,562
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,291	1,391	1,507
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	953	1,570	1,905
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	40	58	150
Commercial Business
Provision for Loan Losses Expensed	(926)	1,450	409
Financing Receivable, Allowance for Credit Losses, Write-downs	(589)	(1,202)	(3,286)
Allowance for Doubtful Accounts Receivable, Recoveries	327	276	105
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	6,429	10,500	17,789
Financing Receivable, Individually Evaluated for Impairment	4,539	2,365	2,725
Financing Receivable, Collectively Evaluated for Impairment	369,154	392,577	392,348
Commercial Business | Beginning of Period
Provision for loan losses	4,203	3,679	6,451
Commercial Business | End of Period
Provision for loan losses	3,015	4,203	3,679
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,295	1,115	823
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,681	2,862	2,805
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	39	226	51
Consumer Loan
Provision for Loan Losses Expensed	5,549	5,820	3,642
Financing Receivable, Allowance for Credit Losses, Write-downs	(8,751)	(5,315)	(4,005)
Allowance for Doubtful Accounts Receivable, Recoveries	3,458	2,569	2,039
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	35,353	43,574	48,903
Financing Receivable, Individually Evaluated for Impairment	3,385	1,950	1,480
Financing Receivable, Collectively Evaluated for Impairment	669,602	596,740	466,174
Consumer Loan | Beginning of Period
Provision for loan losses	8,099	5,025	3,349
Consumer Loan | End of Period
Provision for loan losses	8,355	8,099	5,025
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	997	300	232
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	7,248	7,647	4,321
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	110	152	472
Loans Receivable
Provision for Loan Losses Expensed	9,281	5,519	4,151
Financing Receivable, Allowance for Credit Losses, Write-downs	(15,269)	(9,512)	(11,829)
Allowance for Doubtful Accounts Receivable, Recoveries	5,239	3,707	5,997
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	283,159	362,845	458,535
Financing Receivable, Individually Evaluated for Impairment	34,281	62,161	61,739
Financing Receivable, Collectively Evaluated for Impairment	4,070,108	3,375,909	2,883,857
Loans Receivable | Beginning of Period
Provision for loan losses	38,149	38,435	40,116
Loans Receivable | End of Period
Provision for loan losses	37,400	38,149	38,435
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	6,362	6,093	5,142
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	30,413	30,553	31,157
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	$ 625	$ 1,503	$ 2,136