Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Inventory net allowance	$ 62,142	$ 270,307
Term loan payable discount and debt issuance costs current	64,807	0
Term loan payable discount and debt issuance costs non-current	$ 0	$ 263,378
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	13,929,763	7,939,967
Common stock, shares outstanding	13,929,763	7,938,571
Treasury stock, shares	1,396	1,396