NOTE 2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Basic Numerator: Net income available to common stockholders	$ 1,261	$ 3,863	$ 7,664	$ 10,734
Basic Denominator: Weighted average shares outstanding	6,447,000	6,357,000	6,442,000	6,353,000
Basic income per common share	$ 0.20	$ 0.61	$ 1.19	$ 1.69
Shares included upon conversion of Class C Common to calculate a diluted EPS	128,000	128,000	128,000	128,000
Common Stock
Basic Numerator: Net income available to common stockholders	$ 1,184	$ 3,623	$ 7,194	$ 10,067
Basic Denominator: Weighted average shares outstanding	6,447,000	6,357,000	6,442,000	6,353,000
Basic income per common share	$ 0.18	$ 0.57	$ 1.12	$ 1.58
Shares included upon conversion of Class C Common to calculate a diluted EPS	128,000	128,000	128,000	128,000
Total Denominator for diluted earnings per share	6,575,000	6,485,000	6,570,000	6,481,000
Diluted income per common share	$ 0.18	$ 0.56	$ 1.10	$ 1.55
Class C Common Stock
Basic Numerator: Net income available to common stockholders	$ 20	$ 61	$ 120	$ 170
Basic Denominator: Weighted average shares outstanding	383,000	383,000	383,000	383,000
Basic income per common share	$ 0.05	$ 0.16	$ 0.31	$ 0.44
Total Denominator for diluted earnings per share	383,000	383,000	383,000	383,000
Diluted income per common share	$ 0.05	$ 0.16	$ 0.31	$ 0.44