CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Common stock, par value per share	$ 0.000666	$ 0.000666
Common stock, shares authorized	3,950,000,000	3,950,000,000
Common stock, shares issued	70,188,937	48,466,267
Common stock, shares outstanding	70,188,937	48,466,267
Preferred stock, shares authorized	50,000,000	50,000,000
7.5% Series A-1 Convertible Preferred Stock
Preferred stock, par or stated value per share	$ 0.000666	$ 0.000666
Preferred stock, shares authorized	1,500,000	1,500,000
Preferred stock, shares issued	24,362	23,499
Preferred stock, shares outstanding	24,362	23,499
7.5% Series A-2 Convertible Preferred Stock
Preferred stock, par or stated value per share	$ 0.000666	$ 0.000666
Preferred stock, shares authorized	250,000	250,000
Preferred stock, shares issued	1,610	5,271
Preferred stock, shares outstanding	1,610	5,271
7.5% Series B Convertible Preferred Stock
Preferred stock, par or stated value per share	$ 0.000666	$ 0.000666
Preferred stock, shares authorized	600,000	600,000
Preferred stock, shares issued	24,193	28,399
Preferred stock, shares outstanding	24,193	28,399