| Date | Acquired | Amount |
|---|---|---|
| Nov 06, 2017 |
|
Undisclosed amount |
| Feb 13, 2017 |
|
Undisclosed amount |
| Jun 27, 2016 |
|
Undisclosed amount |
| Jun 04, 2014 |
|
$ 18,500,000 |
| Jul 31, 2013 |
|
Undisclosed amount |
