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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share - (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023
Basic Numerator: Net income available to common stockholders | $ 1,872 | $ 3,860 | $ 9,737 | $ 8,139
Basic Denominator: Weighted average shares outstanding | 6,335 | 6,481 | 6,410 | 6,487
Basic income per common share | $ 0.30 | $ 0.60 | $ 1.52 | $ 1.25
Common Class C [Member] |  |  |  |
Basic Numerator: Net income available to common stockholders | $ 30 | $ 59 | $ 155 | $ 125
Basic Denominator: Weighted average shares outstanding | 383 | 383 | 383 | 383
Basic income per common share | $ 0.08 | $ 0.16 | $ 0.40 | $ 0.33
Diluted Denominator: Weighted average shares outstanding | 383 | 383 | 383 | 383
Convertible Class C Stock | 0 | 0 | 0 | 0
Total Denominator for Diluted Earnings Per Share | 383 | 383 | 383 | 383
Diluted Income per Common Share | $ 0.08 | $ 0.16 | $ 0.40 | $ 0.33
Common Stock [Member] |  |  |  |
Basic Numerator: Net income available to common stockholders | $ 1,755 | $ 3,627 | $ 9,130 | $ 7,647
Basic Denominator: Weighted average shares outstanding | 6,335 | 6,481 | 6,410 | 6,487
Basic income per common share | $ 0.28 | $ 0.56 | $ 1.42 | $ 1.18
Diluted Denominator: Weighted average shares outstanding | 6,335 | 6,481 | 6,410 | 6,487
Convertible Class C Stock | 128 | 128 | 128 | 128
Total Denominator for Diluted Earnings Per Share | 6,463 | 6,609 | 6,538 | 6,615
Diluted Income per Common Share | $ 0.27 | $ 0.55 | $ 1.40 | $ 1.16

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