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