Condensed Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Assets
Accounts receivable allowances	$ 561,293	$ 507,296
Stockholders Equity
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	25,000,000	25,000,000
Common stock, issued	14,900,290	14,685,290
Common stock, outstanding	14,900,290	14,685,290