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Consolidated Statements of Shareholders' Equity (Unaudited) - 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] Common Class A [Member] | Treasury Stock, Common [Member] | AOCI Attributable to Parent [Member] | Retained Earnings [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 | $ 35,923 | $ 53,785
Repurchases of shares of Common Stock (class A), including excise tax (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  | 39,965 | 39,965 |  |  |
Repurchases of shares of Common Stock (class A), including excise tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | 0 |  | $ (133) | 0 | 0 | (133)
Issuance of stock under ESPP of shares of Common Stock (class A) (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  | (3,983) |  |  |
Issuance of stock under ESPP of shares of Common Stock (class A) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | 3 |  | $ 10 | 0 | 0 | 13
Dividends declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  | 0 | 0 | (335) | (335)
Net other comprehensive loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  | 0 | (486) | 0 | (486)
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  | 0 | 0 | 53 | 53
Share-based compensation, net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | (1) |  | $ 0 | 0 | 0 | (1)
Balance (in shares) at Sep. 30, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,866,999 | 2,068,549 |  |  | 1,014,031 |  |  |
Balance at Sep. 30, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 347 | $ 52 | 16,440 |  | $ (2,722) | 3,138 | 35,641 | 52,896
Balance (in shares) (Accounting Standards Update 2016-13 [Member]) at Jun. 30, 2023 | 0 | 0 |  | 0 |  |  |  | 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 | $ 37,564 | $ 52,013 |  |  |  |  |  |  |  |
Balance at Jun. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 347 | $ 52 | 16,442 |  | $ (3,740) | 1,348 | 37,747 | 52,196
Repurchases of shares of Common Stock (class A), including excise tax (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  | 198,213 | 198,213 |  |  |
Repurchases of shares of Common Stock (class A), including excise tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | 0 |  | $ (617) | 0 | 0 | (617)
Issuance of stock under ESPP of shares of Common Stock (class A) (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  | (5,494) |  |  |
Issuance of stock under ESPP of shares of Common Stock (class A) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | 2 |  | $ 15 | 0 | 0 | 17
Dividends declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  | 0 | 0 | (322) | (322)
Net other comprehensive loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  | 0 | (214) | 0 | (214)
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | 0 |  | $ 0 | 0 | (176) | (176)
Balance (in shares) at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,866,999 | 2,068,549 |  |  | 1,563,044 |  |  |
Balance at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 347 | $ 52 | $ 16,444 |  | $ (4,342) | $ 1,134 | $ 37,066 | $ 50,701

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