CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
|
6 Months Ended |
12 Months Ended |
Jun. 30, 2015 |
Dec. 31, 2014 |
| Common stock, par value per share (in dollars per share) |
$ 0.000666
|
$ 0.000666
|
| Common stock, shares authorized |
3,950,000,000
|
3,950,000,000
|
| Common stock, shares issued |
85,173,255
|
82,480,600
|
| Common stock, shares outstanding |
85,173,255
|
82,480,600
|
| Preferred stock, shares authorized |
50,000,000
|
50,000,000
|
| 7.5% Series A-1 Convertible Preferred Stock [Member] |
|
|
| Preferred stock, dividend rate |
7.50%
|
7.50%
|
| Preferred stock, par or stated value per share (in dollars per share) |
$ 0.000666
|
$ 0.000666
|
| Preferred stock, shares authorized |
1,500,000
|
1,500,000
|
| Preferred stock, shares issued |
24,362
|
24,362
|
| Preferred stock, shares outstanding |
24,362
|
24,362
|
| 7.5% Series A-2 Convertible Preferred Stock [Member] |
|
|
| Preferred stock, dividend rate |
7.50%
|
7.50%
|
| Preferred stock, par or stated value per share (in dollars per share) |
$ 0.000666
|
$ 0.000666
|
| Preferred stock, shares authorized |
250,000
|
250,000
|
| Preferred stock, shares issued |
1,610
|
1,610
|
| Preferred stock, shares outstanding |
1,610
|
1,610
|
| 7.5% Series B Convertible Preferred Stock |
|
|
| Preferred stock, dividend rate |
7.50%
|
7.50%
|
| Preferred stock, par or stated value per share (in dollars per share) |
$ 0.000666
|
$ 0.000666
|
| Preferred stock, shares authorized |
600,000
|
600,000
|
| Preferred stock, shares issued |
22,626
|
22,676
|
| Preferred stock, shares outstanding |
22,626
|
22,676
|