Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member] Common Class A [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member] Common Class C [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock, Common [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member] Common Class A [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member] Common Class C [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Treasury Stock, Common [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class C [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Common Class A [Member]	Total
Balance (in shares) at Jun. 30, 2022															13,866,999	2,068,549		978,049
Balance at Jun. 30, 2022															$ 347	$ 52	$ 16,438	$ (2,599)	$ 3,624	$ 35,748		$ 53,610
Repurchases of shares of Common Stock (class A)															$ 0	$ 0	0	$ (1,195)	0	0		(1,195)
Repurchases of shares of Common Stock (class A) (in shares)																		412,257			412,257
Issuance of stock under ESPP of shares of Common Stock (class A) (in shares)															0	0		(19,981)
Issuance of stock under ESPP of shares of Common Stock (class A)															$ 0	$ 0	5	$ 54	0	0		59
Share-based compensation, adjustment for forfeitures, net of tax															0	0	(1)	0	0	0		(1)
Dividends declared															0	0	0	0	0	(1,325)		(1,325)
Other Comprehensive Income (Loss), Net of Tax															0	0	0	0	(2,276)	0		(2,276)
Net income (loss)															$ 0	$ 0	0	$ 0	0	3,149		3,149
Balance (in shares) (Accounting Standards Update 2016-13 [Member]) at Jun. 30, 2023								13,866,999	2,068,549		1,370,325
Balance (in shares) at Jun. 30, 2023															13,866,999	2,068,549		1,370,325
Balance (Accounting Standards Update 2016-13 [Member]) at Jun. 30, 2023	$ 0	$ 0	$ 0	$ 0	$ 0	$ (183)	$ (183)	$ 347	$ 52	$ 16,442	$ (3,740)	$ 1,348	$ 37,389	$ 51,838
Balance at Jun. 30, 2023															$ 347	$ 52	16,442	$ (3,740)	1,348	37,572		52,021
Repurchases of shares of Common Stock (class A)															$ 0	$ 0	0	$ (2,208)	0	0		(2,208)
Repurchases of shares of Common Stock (class A) (in shares)																		767,651			767,651
Issuance of stock under ESPP of shares of Common Stock (class A) (in shares)															0	0		(24,460)
Issuance of stock under ESPP of shares of Common Stock (class A)															$ 0	$ 0	1	$ 68	0	0		69
Dividends declared															0	0	0	0	0	(1,262)		(1,262)
Other Comprehensive Income (Loss), Net of Tax															0	0	0	0	(764)	0		(764)
Net income (loss)															$ 0	$ 0	0	$ 0	0	1,333		1,333
Balance (in shares) at Jun. 30, 2024															13,866,999	2,068,549		2,113,516
Balance at Jun. 30, 2024															$ 347	$ 52	$ 16,443	$ (5,880)	$ 584	$ 37,460		$ 49,006