Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Convertible Notes current, discount		$ 1
Convertible Notes, discount		$ 36,598
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	340,000,000	340,000,000
Common stock, shares issued	163,905,342	156,234,454
Common stock, shares outstanding	163,905,342	156,234,454