Consolidated Statements Of Shareholders (Deficit) Equity - USD ($)	Par Value Of Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Warrants Outstanding [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance unadjusted	$ 932,085	$ (8,215)	$ 663,100	$ 312,470,030	$ (290,010,708)	$ 24,046,292
Adjustment for reverse stock split 1:10, effective March 30, 2016	(838,876)			838,876
Balance as Adjusted at Dec. 31, 2013	93,209	(8,215)	663,100	313,308,906	(290,010,708)	24,046,292
Issuance of common stock and warrants in public and private offerings	2,667			11,943,698		11,946,365
Issuance of common stock upon exercise of options and warrants	905		(307,322)	1,961,967		1,655,550
Share-based compensation	403			4,527,829		4,528,232
Comprehensive income (loss) for the year		8,215			(23,568,955)	(23,560,740)
Balance as Adjusted at Dec. 31, 2014	97,184		355,778	331,742,400	(313,579,663)	18,615,699
Issuance of common stock and warrants in public and private offerings	11,067		1,300,000	2,079,556		3,390,623
Issuance of common stock for services	250			249,750		250,000
Expiration of warrants			(355,778)	355,778
Share-based compensation, net of shares withheld for taxes	1,651			1,099,872		1,101,523
Comprehensive income (loss) for the year		(53)			(17,075,007)	(17,075,060)
Balance as Adjusted at Dec. 31, 2015	110,152	(53)	1,300,000	335,527,356	(330,654,670)	6,282,785
Issuance of common stock and warrants in public and private offerings	15,454		334,930	3,784,976		4,135,360
Issuance of common stock for services	2,450			427,550		430,000
Issuance of common stock upon exercise of options and warrants	1,300		(911,997)	1,333,197		422,500
Share-based compensation, net of shares withheld for taxes	2,474		103,073	2,014,170		2,119,717
Comprehensive income (loss) for the year		124			(21,509,270)	(21,509,146)
Balance as Adjusted at Dec. 31, 2016	$ 131,830	$ 71	$ 826,006	$ 343,087,249	$ (352,163,940)	$ (8,118,784)