Condensed Balance Sheets (Parenthetical) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Inventory net allowance	$ 375,861	$ 284,319
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	7,052,353	6,845,638
Common stock, shares outstanding	7,050,957	6,844,242
Treasury stock, shares	1,396	1,396