Consolidated Balance Sheets (Parenthetical) - USD ($)	Jun. 30, 2018	Jun. 30, 2017
Allowance for doubtful accounts	$ 153,220	$ 392,250
Stockholders' equity:
Preferred stock, par value	$ .01	$ .01
Preferred stock, authorized	30,000,000	30,000,000
Common stock, par value	$ .01	$ .01
Common stock, authorized	50,000,000	50,000,000
Common stock, issued	19,773,549	19,423,821
Common stock, outstanding	19,773,549	19,423,821
Series B Preferred [Member]
Stockholders' equity:
Preferred stock, authorized	700,000	700,000
Preferred stock, issued	625,375	625,375
Preferred stock, outstanding	625,375	625,375
Series B-1 Preferred [Member]
Stockholders' equity:
Preferred stock, authorized	550,000	550,000
Preferred stock, issued	212,402	285,859
Preferred stock, outstanding	212,402	285,859