Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Income	Treasury Stock	Accumulated Deficit	Total
Balance at Dec. 31, 2016	$ 1,917	$ 1,137,482	$ 247	$ (3,091)	$ (1,051,467)	$ 85,088
Balance (in shares) at Dec. 31, 2016	191,723,974			582,328		191,723,974
Increase (Decrease) in Stockholders' Equity
Net loss attributable to the Company					(66,658)	$ (66,658)
Other comprehensive income			1,156			1,156
Stock based compensation	$ 1	4,791				4,792
Stock based compensation (in shares)	69,254
Stock dividend		52			(52)
Stock dividend (in shares)	37,809
Public offering, common stock, net	$ 93	20,591				20,684
Public offering, common stock, net (in shares)	9,314,666
Conversion of preferred stock	$ 96	7,682				7,778
Conversion of preferred stock (in shares)	9,548,393
Stock option exercises	$ 1	36				37
Stock option exercises (in shares)	100,000
Exercise of warrants, net of warrants issued	$ 145	39,741				39,886
Exercise of warrants (in shares)	14,501,500
Provision for common stock warrants		8,513				8,513
Accretion of discount		(3,009)				(3,009)
Balance at Jun. 30, 2017	$ 2,253	$ 1,215,879	$ 1,403	$ (3,091)	$ (1,118,177)	$ 98,267
Balance (in shares) at Jun. 30, 2017	225,295,596			582,328		225,295,596