Amount of cash inflow/(outflow) from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

No definition available.

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT - USD ($)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Stock Options and Warrants	Stock Options and Warrants Common Stock	Stock Options and Warrants Additional Paid-in Capital	Restricted Stock Units (RSUs)	Restricted Stock Units (RSUs) Common Stock	Restricted Stock Units (RSUs) Additional Paid-in Capital	Stock Options	Stock Options Common Stock	Stock Options Additional Paid-in Capital	RSUs and Stock-Settled Appreciation Rights Common Stock	RSUs and Stock-Settled Appreciation Rights Additional Paid-in Capital
Total stockholders' equity (in shares) at Dec. 31, 2014		53,504,296
Total stockholders' equity at Dec. 31, 2014	$ (246,502,477)	$ 5,351	$ 175,483,180	$ (421,991,008)	$ 0
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(39,451,324)			(39,451,324)
Issuance of common stock upon exercise of stock options and warrants (in shares)							610,000
Issuance of common stock upon exercise of stock options and warrants						$ 12,200	$ 60	$ 12,140
Stock-based compensation	1,528,582		1,528,582
Change in excess tax benefit stock-based compensation, value	(15,531)		(15,531)
Payment of common stock tendered for employee stock-based compensation tax obligations	$ 0
Total stockholders' equity (in shares) at Dec. 31, 2015	78,692,912	54,114,296
Total stockholders' equity at Dec. 31, 2015	$ (284,428,550)	$ 5,411	177,008,371	(461,442,332)	0
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(39,697,960)			(39,697,960)
Issuance of common stock upon exercise of stock options and warrants (in shares)										(483,335)
Issuance of common stock upon exercise of stock options and warrants									$ 0	$ 48	$ (48)
Stock-based compensation	775,541		775,541
Change in excess tax benefit stock-based compensation, value	0
Payment of common stock tendered for employee stock-based compensation tax obligations (in shares)		(136,744)
Payment of common stock tendered for employee stock-based compensation tax obligations	(428,009)	$ (13)	(427,996)
Issuance of common stock associated with rights offering, shares		23,523,195
Issuance of common stock associated with rights offering, value	34,596,469	$ 2,352	34,594,117
Issuance of common stock associated with backstop agreement, shares		708,530
Issuance of common stock associated with backstop agreement, value	1,764,240	$ 71	1,764,169
Total stockholders' equity (in shares) at Dec. 31, 2016		78,692,612
Total stockholders' equity at Dec. 31, 2016	(287,418,269)	$ 7,869	213,714,154	(501,140,292)	0
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(36,235,484)			(36,235,484)
Issuance of common stock upon exercise of stock options and warrants (in shares)													(33,870)		466,328
Issuance of common stock upon exercise of stock options and warrants												$ 89,498	$ 3	$ 89,495	$ 47	$ (47)
Stock-based compensation	1,101,031		1,101,031
Change in excess tax benefit stock-based compensation, value	0
Payment of common stock tendered for employee stock-based compensation tax obligations (in shares)		(153,810)
Payment of common stock tendered for employee stock-based compensation tax obligations	$ (591,067)	$ (15)	(591,052)
Buy-back of stock options			(84,000)
Total stockholders' equity (in shares) at Dec. 31, 2017	78,692,912	79,039,000
Total stockholders' equity at Dec. 31, 2017	$ (323,138,291)	$ 7,904	$ 214,229,581	$ (537,375,776)	$ 0