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, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Basic Numerator: Net income available to common stockholders	$ 3,863	$ 3,481	$ 10,734	$ 11,389
Basic Denominator: Weighted average shares outstanding	6,357,000	6,287,000	6,353,000	6,287,000
Basic income per common share	$ 0.61	$ 0.55	$ 1.69	$ 1.81
Common Shares
Basic Numerator: Net income available to common stockholders	$ 3,623	$ 3,263	$ 10,067	$ 10,675
Basic Denominator: Weighted average shares outstanding	6,357,000	6,287,000	6,353,000	6,287,000
Basic income per common share	$ 0.57	$ 0.52	$ 1.58	$ 1.7
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	6,485,000	6,415,000	6,481,000	6,415,000
Diluted income per common share	$ 0.56	$ 0.51	$ 1.55	$ 1.66
Class C Common Stock
Basic Numerator: Net income available to common stockholders	$ 61	$ 55	$ 170	$ 182
Basic Denominator: Weighted average shares outstanding	383,000	383,000	383,000	383,000
Basic income per common share	$ 0.16	$ 0.15	$ 0.44	$ 0.48
Shares included upon conversion of Class C Common to calculate a diluted EPS
Total Denominator for diluted earnings per share	383,000	383,000	383,000	383,000
Diluted income per common share	$ 0.16	$ 0.15	$ 0.44	$ 0.48