NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Financing Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Allowance for loan losses	$ (38,651)		$ (38,409)
One-to-Four-Family Residential Construction
Financing Receivable, Credit Loss, Expense (Reversal)	358	$ 424
Financing Receivable, Allowance for Credit Loss, Writeoff	(455)	(14)
Accounts Receivable, Allowance for Credit Loss, Recovery	11	84
One-to-Four-Family Residential Construction \| Beginning of Period
Allowance for loan losses	3,122	2,108
One-to-Four-Family Residential Construction \| End of Period
Allowance for loan losses	3,036	2,602
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	382		694
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,615		2,392
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	39		36
Financing Receivable, Individually Evaluated for Impairment	4,317		6,116
Financing Receivable, Collectively Evaluated for Impairment	442,161		433,209
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	90,530		93,841
Other Residential
Financing Receivable, Credit Loss, Expense (Reversal)	723	605
Financing Receivable, Allowance for Credit Loss, Writeoff	0	(256)
Accounts Receivable, Allowance for Credit Loss, Recovery	0	24
Other Residential \| Beginning of Period
Allowance for loan losses	4,713	2,839
Other Residential \| End of Period
Allowance for loan losses	5,436	3,212
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	5,404		4,681
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	32		32
Financing Receivable, Individually Evaluated for Impairment	0		0
Financing Receivable, Collectively Evaluated for Impairment	864,990		784,894
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	12,709		12,790
Commercial Real Estate
Financing Receivable, Credit Loss, Expense (Reversal)	1,163	(486)
Financing Receivable, Allowance for Credit Loss, Writeoff	0	(102)
Accounts Receivable, Allowance for Credit Loss, Recovery	15	11
Commercial Real Estate \| Beginning of Period
Allowance for loan losses	19,803	18,639
Commercial Real Estate \| End of Period
Allowance for loan losses	20,981	18,062
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	946		613
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	19,819		18,958
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	216		232
Financing Receivable, Individually Evaluated for Impairment	5,926		3,501
Financing Receivable, Collectively Evaluated for Impairment	1,382,752		1,367,934
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	31,892		33,620
Commercial Construction
Financing Receivable, Credit Loss, Expense (Reversal)	(571)	362
Financing Receivable, Allowance for Credit Loss, Writeoff	(31)	(37)
Accounts Receivable, Allowance for Credit Loss, Recovery	12	96
Commercial Construction \| Beginning of Period
Allowance for loan losses	3,105	1,767
Commercial Construction \| End of Period
Allowance for loan losses	2,515	2,188
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,463		3,029
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	52		76
Financing Receivable, Individually Evaluated for Impairment	14		14
Financing Receivable, Collectively Evaluated for Impairment	1,375,277		1,461,644
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	4,201		4,093
Commercial Business
Financing Receivable, Credit Loss, Expense (Reversal)	(152)	482
Financing Receivable, Allowance for Credit Loss, Writeoff	(74)	(409)
Accounts Receivable, Allowance for Credit Loss, Recovery	142	41
Commercial Business \| Beginning of Period
Allowance for loan losses	1,568	3,581
Commercial Business \| End of Period
Allowance for loan losses	1,484	3,695
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	246		309
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,226		1,247
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	12		12
Financing Receivable, Individually Evaluated for Impairment	1,713		1,844
Financing Receivable, Collectively Evaluated for Impairment	333,316		334,214
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	4,411		4,347
Consumer
Financing Receivable, Credit Loss, Expense (Reversal)	429	563
Financing Receivable, Allowance for Credit Loss, Writeoff	(2,206)	(2,822)
Accounts Receivable, Allowance for Credit Loss, Recovery	878	1,252
Consumer \| Beginning of Period
Allowance for loan losses	6,098	7,558
Consumer \| End of Period
Allowance for loan losses	5,199	6,551
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	327		425
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,841		5,640
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	31		33
Financing Receivable, Individually Evaluated for Impairment	1,938		2,464
Financing Receivable, Collectively Evaluated for Impairment	401,806		429,766
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	17,382		18,960
Loans Receivable
Financing Receivable, Credit Loss, Expense (Reversal)	1,950	1,950
Financing Receivable, Allowance for Credit Loss, Writeoff	(2,766)	(3,640)
Accounts Receivable, Allowance for Credit Loss, Recovery	1,058	1,508
Loans Receivable \| Beginning of Period
Allowance for loan losses	38,409	36,492
Loans Receivable \| End of Period
Allowance for loan losses	38,651	$ 36,310
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,901		2,041
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	36,368		35,947
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	382		421
Financing Receivable, Individually Evaluated for Impairment	13,908		13,939
Financing Receivable, Collectively Evaluated for Impairment	4,800,302		4,811,661
All Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Not Accounted for Using Income Recognition Model	$ 161,125		$ 167,651

The carrying amount as of the balance sheet date of loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer, for which it was deemed probable at acquisition that the investor would be unable to collect all contractually required payments, and to which the income recognition total model was not applied.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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