| Date | Acquired | Amount |
|---|---|---|
| Jun 03, 2017 |
|
Undisclosed amount |
| Apr 25, 2016 |
|
$ 6,000,000 |
| Nov 03, 2015 |
|
$ 130,000,000 |
| Jun 04, 2015 |
|
Undisclosed amount |
| May 07, 2010 |
|
Undisclosed amount |
