Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (per share)	$ 0.001	$ 0.001
Common stock, shares authorized	4,990,000,000	160,000,000
Common stock, shares issued	427,940,440	422,910,887
Common stock, shares outstanding	427,940,440	422,910,887