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v3.23.2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares | Mar. 31, 2023 | Jun. 30, 2022
--- | --- | ---
Common Class A [Member] |  |
Statement [Line Items] |  |
Common Stock, Par value (in dollars per share) | $ 0.025 | $ 0.025
Common Stock, Shares Authorized (in shares) | 28,000,000 | 28,000,000
Common Stock, Shares, Issued (in shares) | 13,866,999 | 13,866,999
Common Stock, Shares, Outstanding (in shares) | 12,582,905 | 12,888,950
Treasury shares (in shares) | 1,284,094 | 978,049
Common Class B [Member] |  |
Statement [Line Items] |  |
Common Stock, Par value (in dollars per share) | $ 0.025 | $ 0.025
Common Stock, Shares Authorized (in shares) | 4,500,000 | 4,500,000
Common Stock, Shares, Issued (in shares) | 0 | 0
Common Class C [Member] |  |
Statement [Line Items] |  |
Common Stock, Par value (in dollars per share) | $ 0.025 | $ 0.025
Common Stock, Shares Authorized (in shares) | 3,500,000 | 3,500,000
Common Stock, Shares, Issued (in shares) | 2,068,549 | 2,068,549
Common Stock, Shares, Outstanding (in shares) | 2,068,549 | 2,068,549

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