| Date | Acquired | Amount |
|---|---|---|
| Jun 25, 2014 |
|
Undisclosed amount |
| Jan 29, 2014 |
|
Undisclosed amount |
| Dec 16, 2013 |
|
$ 30,000,000 |
| Feb 16, 2012 |
|
$ 5,000,000 |
| Dec 31, 2011 |
|
Undisclosed amount |
