Condensed Statements of Changes in Stockholders' Equity - 6 months ended Jun. 30, 2016 - USD ($)	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance at Dec. 31, 2015	$ 16,893,398	$ 6,844	$ 106,569,405	$ (75,000)	$ (41,357)	$ (89,566,494)
Balance, shares at Dec. 31, 2015		6,844,242
Stock issued for payment of 2015 annual bonus	364,910	$ 133	364,777
Stock issued for payment of 2015 annual bonus, shares		133,179
Exercise of stock options	2,142	$ 1	2,141
Exercise of stock options, shares		996
Stock-based compensation expense	322,136	$ 33	322,103
Stock-based compensation expense, shares		32,562
Employee stock purchase plan purchases	146,758	$ 40	146,718
Employee stock purchase plan purchases, shares		39,978
Growth Term Loan B warrant discount	122,460		122,460
Net loss	(13,878,027)					(13,878,027)
Other comprehensive income	43,873				43,873
Balance at Jun. 30, 2016	$ 4,017,650	$ 7,051	$ 107,527,604	$ (75,000)	$ 2,516	$ (103,444,521)
Balance, shares at Jun. 30, 2016		7,050,957