CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
CONDENSED CONSOLIDATED BALANCE SHEETS
Allowance for doubtful accounts on trade and other receivables	$ 5,514	$ 5,972
Cumulative preferred stock, par value	$ 0.0001	$ 0.0001
Cumulative preferred stock, shares authorized	1,000,000	1,000,000
Cumulative preferred stock, shares issued	400,100	400,100
Cumulative preferred stock, shares outstanding	400,100	400,100
Cumulative preferred stock, aggregate liquidation preference	$ 40,722	$ 40,722
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	31,086,990	30,880,531
Common stock, shares outstanding	30,175,225	29,968,766
Treasury stock shares	911,765	911,765