CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($)	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Deficit
Balance (in shares) at Dec. 31, 2018		112,703,926		3,605,263
Balance, beginning of period at Dec. 31, 2018	$ 49,655,000	$ 113,000	$ 164,744,000	$ (38,642,000)	$ (76,560,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deemed dividends	0
Share-based compensation expense	9,198,000		9,198,000
Exercise of stock options	108,000		(1,343,000)	$ 1,451,000
Exercise of stock options (in shares)				(150,000)
Issuance of restricted stock	0		(35,740,000)	$ 35,740,000
Issuance of restricted stock (in shares)				(2,853,235)
Restricted stock cancellation/forfeited	0		6,788,000	$ (6,788,000)
Restricted stock cancellation/forfeited (in shares)				722,227
Shares repurchased for tax withholding (in shares)				394,140
Shares repurchased for tax withholding	(1,282,000)			$ (1,282,000)
Net (loss) income	(18,104,000)				(18,104,000)
Balance (in shares) at Sep. 30, 2019		112,703,926		1,718,395
Balance, end of period at Sep. 30, 2019	39,575,000	$ 113,000	143,647,000	$ (9,521,000)	(94,664,000)
Balance (in shares) at Jun. 30, 2019		112,703,926		1,155,034
Balance, beginning of period at Jun. 30, 2019	24,684,000	$ 113,000	136,298,000	$ (4,684,000)	(107,043,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	2,685,000		2,685,000
Restricted stock cancellation/forfeited	0		4,664,000	$ (4,664,000)
Restricted stock cancellation/forfeited (in shares)				530,274
Shares repurchased for tax withholding (in shares)				33,087
Shares repurchased for tax withholding	(173,000)			$ (173,000)
Net (loss) income	12,379,000				12,379,000
Balance (in shares) at Sep. 30, 2019		112,703,926		1,718,395
Balance, end of period at Sep. 30, 2019	39,575,000	$ 113,000	143,647,000	$ (9,521,000)	(94,664,000)
Balance (in shares) at Dec. 31, 2019		112,703,926		1,885,277
Balance, beginning of period at Dec. 31, 2019	34,398,000	$ 113,000	147,231,000	$ (10,806,000)	(102,140,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series B Convertible Preferred Stock	32,954,000		32,954,000
Deemed dividends	(31,568,000)		(31,568,000)
Share-based compensation expense	11,829,000		11,829,000
Exercise of stock options	370,000		(1,986,000)	$ 2,356,000
Exercise of stock options (in shares)				(265,300)
Issuance of restricted stock	0		(2,939,000)	$ 2,939,000
Issuance of restricted stock (in shares)				(328,894)
Restricted stock cancellation/forfeited	0		2,650,000	$ (2,650,000)
Restricted stock cancellation/forfeited (in shares)				345,052
Shares repurchased for tax withholding (in shares)				476,057
Shares repurchased for tax withholding	(2,409,000)		147,000	$ (2,556,000)
Net (loss) income	(32,704,000)				(32,704,000)
Balance (in shares) at Sep. 30, 2020		112,703,926		2,112,192
Balance, end of period at Sep. 30, 2020	12,870,000	$ 113,000	158,318,000	$ (10,717,000)	(134,844,000)
Balance (in shares) at Jun. 30, 2020		112,703,926		2,412,522
Balance, beginning of period at Jun. 30, 2020	22,860,000	$ 113,000	151,625,000	$ (13,451,000)	(115,427,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series B Convertible Preferred Stock	32,954,000		32,954,000
Deemed dividends	(31,568,000)		(31,568,000)
Share-based compensation expense	8,048,000		8,048,000
Exercise of stock options	72,000		(328,000)	$ 400,000
Exercise of stock options (in shares)				(45,000)
Issuance of restricted stock	0		(2,939,000)	$ 2,939,000
Issuance of restricted stock (in shares)				(328,894)
Restricted stock cancellation/forfeited	0		526,000	$ (526,000)
Restricted stock cancellation/forfeited (in shares)				59,441
Shares repurchased for tax withholding (in shares)				14,123
Shares repurchased for tax withholding	(79,000)			$ (79,000)
Net (loss) income	(19,417,000)				(19,417,000)
Balance (in shares) at Sep. 30, 2020		112,703,926		2,112,192
Balance, end of period at Sep. 30, 2020	$ 12,870,000	$ 113,000	$ 158,318,000	$ (10,717,000)	$ (134,844,000)