Consolidated Balance Sheets (Parenthetical) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts, accounts receivable	$ 50,000	$ 50,000
Common stock, par value	$ .02	$ .02
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	16,813,613	16,599,327
Common stock, shares outstanding	16,813,613	16,599,327