Note 4: Loans and Allowance for Loan Losses: Schedule of Balance in the Allowance for Loan Losses and Recorded Invesetment (Details) - USD ($) $ in Thousands		3 Months Ended
Jun. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Loans Receivable
Financing Receivable, Credit Loss, Expense (Reversal)		$ 896	$ 682
Allowance for Loan and Lease Losses, Write-offs		(107)	(112)
Accounts Receivable, Allowance for Credit Loss, Recovery		18	6
Loans Receivable \| Beginning of Period
Allowance for Loan Losses	$ 19,903	19,903	18,214
Loans Receivable \| End of Period
Allowance for Loan Losses		20,710	18,790
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	19,903	20,710	18,790
Financing Receivables Allowance for Credit Losses Acquired with Deteriorated Credit Quality	0	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	1,837,763	1,870,727
Financing Receivables Acquired with Deteriorated Credit Quality	28,548	24,483
Consumer Loan
Financing Receivable, Credit Loss, Expense (Reversal)		96	92
Allowance for Loan and Lease Losses, Write-offs		(72)	(17)
Accounts Receivable, Allowance for Credit Loss, Recovery		4	4
Consumer Loan \| Beginning of Period
Allowance for Loan Losses	1,046	1,046	902
Consumer Loan \| End of Period
Allowance for Loan Losses		1,074	981
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,046	1,074	981
Financing Receivables Allowance for Credit Losses Acquired with Deteriorated Credit Quality	0	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	97,534	101,117
Financing Receivables Acquired with Deteriorated Credit Quality	0	0
Commercial Loan
Financing Receivable, Credit Loss, Expense (Reversal)		384	237
Allowance for Loan and Lease Losses, Write-offs		(35)	0
Accounts Receivable, Allowance for Credit Loss, Recovery		0	1
Commercial Loan \| Beginning of Period
Allowance for Loan Losses	4,387	4,387	4,196
Commercial Loan \| End of Period
Allowance for Loan Losses		4,736	4,434
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,387	4,736	4,434
Financing Receivables Allowance for Credit Losses Acquired with Deteriorated Credit Quality	0	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	349,681	370,298
Financing Receivables Acquired with Deteriorated Credit Quality	6,193	5,430
Construction Loan Payable
Financing Receivable, Credit Loss, Expense (Reversal)		174	196
Allowance for Loan and Lease Losses, Write-offs		0	0
Accounts Receivable, Allowance for Credit Loss, Recovery		0	0
Construction Loan Payable \| Beginning of Period
Allowance for Loan Losses	1,365	1,365	1,097
Construction Loan Payable \| End of Period
Allowance for Loan Losses		1,539	1,293
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,365	1,539	1,293
Financing Receivables Allowance for Credit Losses Acquired with Deteriorated Credit Quality	0	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	78,826	87,983
Financing Receivables Acquired with Deteriorated Credit Quality	1,308	1,306
Residential Real Estate
Financing Receivable, Credit Loss, Expense (Reversal)		(134)	122
Allowance for Loan and Lease Losses, Write-offs		0	0
Accounts Receivable, Allowance for Credit Loss, Recovery		0	1
Residential Real Estate \| Beginning of Period
Allowance for Loan Losses	3,706	3,706	3,226
Residential Real Estate \| End of Period
Allowance for Loan Losses		3,572	3,349
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,706	3,572	3,349
Financing Receivables Allowance for Credit Losses Acquired with Deteriorated Credit Quality	0	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	490,307	487,680
Financing Receivables Acquired with Deteriorated Credit Quality	1,685	1,667
Commercial Real Estate
Financing Receivable, Credit Loss, Expense (Reversal)		376	35
Allowance for Loan and Lease Losses, Write-offs		0	(95)
Accounts Receivable, Allowance for Credit Loss, Recovery		14	0
Commercial Real Estate \| Beginning of Period
Allowance for Loan Losses	9,399	9,399	8,793
Commercial Real Estate \| End of Period
Allowance for Loan Losses		9,789	8,733
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	9,399	9,789	8,733
Financing Receivables Allowance for Credit Losses Acquired with Deteriorated Credit Quality	0	0	$ 0
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	821,415	823,649
Financing Receivables Acquired with Deteriorated Credit Quality	$ 19,362	$ 16,080

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Represents the monetary amount of Financing Receivables Acquired with Deteriorated Credit Quality, during the indicated time period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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