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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2019	Jun. 30, 2018
Statement of Financial Position [Abstract]
Allowance for doubtful trade accounts receivable	$ 29,406	$ 13,364
Preferred stock: Series D, par value	$ .01	$ 0.01
Preferred stock: Series D, shares authorized	500,000	500,000
Preferred stock: Series D, shares issued	0	0
Preferred stock: Series D, shares outstanding	0	0
Common stock: Class A, par value	$ 0.01	$ 0.01
Common stock: Class A, shares authorized	44,500,000	44,500,000
Common stock: Class A, shares issued	25,813,895	25,764,544
Common stock: Class A, shares outstanding	25,813,895	25,764,544

X

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Amount of allowance for credit loss on accounts receivable, classified as current.

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