SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share - (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Basic Numerator: Net income available to common stockholders	$ 4,020	$ 3,111	$ 7,907	$ 5,619
Basic Denominator: Weighted average shares outstanding	6,554	6,465	6,554	6,456
Basic income per common share	$ 0.61	$ 0.48	$ 1.21	$ 0.87
Total Denominator for diluted earnings per share	6,682	6,593	6,682	6,584
Diluted income per common share	$ 0.57	$ 0.44	$ 1.11	$ 0.80
Common Stock [Member]
Basic Numerator: Net income available to common stockholders	$ 3,777	$ 2,923	$ 7,430	$ 5,281
Basic Denominator: Weighted average shares outstanding	6,554	6,465	6,554	6,456
Basic income per common share	$ 0.58	$ 0.45	$ 1.13	$ 0.82
Diluted Denominator: Weighted average shares outstanding	6,554	6,465	6,554	6,456
Convertible Class C Stock	128	128	128	128
Total Denominator for diluted earnings per share	6,682	6,593	6,682	6,584
Diluted income per common share	$ 0.57	$ 0.44	$ 1.11	$ 0.80
Common Class C [Member]
Basic Numerator: Net income available to common stockholders	$ 62	$ 48	$ 122	$ 86
Basic Denominator: Weighted average shares outstanding	383	383	383	383
Basic income per common share	$ 0.16	$ 0.12	$ 0.32	$ 0.23
Diluted Denominator: Weighted average shares outstanding	383	383	383	383
Convertible Class C Stock
Total Denominator for diluted earnings per share	383	383	383	383
Diluted income per common share	$ 0.16	$ 0.12	$ 0.32	$ 0.23