Loans and Allowance for Loan Losses, Impaired Loans By Loan Portfolio Class (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2022
Loans and Allowance for Loan Losses [Abstract]
Threshold principal amount of nonaccrual loans evaluated individually for impairment	$ 250		$ 250
With no related allowance recorded [Abstract]
Recorded investment	1,628		1,628		$ 1,536
Unpaid principal	1,628		1,628		1,536
Average recorded investment	1,768	$ 1,511	1,648	$ 1,201
Interest income recognized	12	17	19	20
With an allowance recorded [Abstract]
Recorded investment	8,614		8,614		9,235
Unpaid principal	8,614		8,614		9,235
Related allowance	2,617		2,617		2,347
Average recorded investment	8,799	6,477	8,698	5,813
Interest income recognized	57	86	111	144
Total impaired [Abstract]
Recorded investment	10,242		10,242		10,771
Unpaid principal	10,242		10,242		10,771
Related allowance	2,617		2,617		2,347
Average recorded investment	10,567	7,988	10,346	7,014
Interest income recognized	69	103	130	164
Residential Real Estate [Member] \| Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded investment	785		785		990
Unpaid principal	785		785		990
Average recorded investment	923	664	954	442
Interest income recognized	2	10	2	10
With an allowance recorded [Abstract]
Recorded investment	2,428		2,428		1,953
Unpaid principal	2,428		2,428		1,953
Related allowance	587		587		588
Average recorded investment	2,301	1,958	2,120	1,338
Interest income recognized	5	28	7	33
Total impaired [Abstract]
Recorded investment	3,213		3,213		2,943
Unpaid principal	3,213		3,213		2,943
Related allowance	587		587		588
Average recorded investment	3,224	2,622	3,074	1,780
Interest income recognized	7	38	9	43
Commercial Real Estate [Member] \| Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded investment	371		371		67
Unpaid principal	371		371		67
Average recorded investment	372	539	218	492
Interest income recognized	6	5	8	8
With an allowance recorded [Abstract]
Recorded investment	4,100		4,100		3,698
Unpaid principal	4,100		4,100		3,698
Related allowance	1,090		1,090		1,118
Average recorded investment	3,805	612	3,517	696
Interest income recognized	41	8	73	18
Total impaired [Abstract]
Recorded investment	4,471		4,471		3,765
Unpaid principal	4,471		4,471		3,765
Related allowance	1,090		1,090		1,118
Average recorded investment	4,177	1,151	3,735	1,188
Interest income recognized	47	13	81	26
Commercial Real Estate [Member] \| Construction [Member]
With an allowance recorded [Abstract]
Recorded investment	102		102		102
Unpaid principal	102		102		102
Related allowance	1		1		1
Average recorded investment	102	102	102	102
Interest income recognized	0	0	0	0
Total impaired [Abstract]
Recorded investment	102		102		102
Unpaid principal	102		102		102
Related allowance	1		1		1
Average recorded investment	102	102	102	102
Interest income recognized	0	0	0	0
Consumer Loan [Member] \| Home Equity [Member]
With no related allowance recorded [Abstract]
Recorded investment	128		128		128
Unpaid principal	128		128		128
Average recorded investment	128	128	128	128
Interest income recognized	0	0	0	0
With an allowance recorded [Abstract]
Recorded investment	0		0		320
Unpaid principal	0		0		320
Related allowance	0		0		44
Average recorded investment	0	321	160	321
Interest income recognized	0	3	4	6
Total impaired [Abstract]
Recorded investment	128		128		448
Unpaid principal	128		128		448
Related allowance	0		0		44
Average recorded investment	128	449	288	449
Interest income recognized	0	3	4	6
Consumer Loan [Member] \| Consumer Installment [Member]
With no related allowance recorded [Abstract]
Recorded investment	4		4		5
Unpaid principal	4		4		5
Average recorded investment	4	0	5	0
Interest income recognized	0	0	1	0
With an allowance recorded [Abstract]
Related allowance	0		0		0
Total impaired [Abstract]
Recorded investment	4		4		5
Unpaid principal	4		4		5
Related allowance	0		0		0
Average recorded investment	4	0	5	0
Interest income recognized	0	0	1	0
Commercial Loans [Member]
With no related allowance recorded [Abstract]
Recorded investment	340		340		346
Unpaid principal	340		340		346
Average recorded investment	341	180	343	139
Interest income recognized	4	2	8	2
With an allowance recorded [Abstract]
Recorded investment	1,984		1,984		3,162
Unpaid principal	1,984		1,984		3,162
Related allowance	939		939		596
Average recorded investment	2,591	3,484	2,799	3,356
Interest income recognized	11	47	27	87
Total impaired [Abstract]
Recorded investment	2,324		2,324		3,508
Unpaid principal	2,324		2,324		3,508
Related allowance	939		939		$ 596
Average recorded investment	2,932	3,664	3,142	3,495
Interest income recognized	$ 15	$ 49	$ 35	$ 89

The threshold principal amount of nonaccrual loans evaluated individually for impairment.

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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