| Date | Acquired | Amount |
|---|---|---|
| May 08, 2017 |
|
Undisclosed amount |
| Apr 27, 2014 |
|
$ 20,000,000 |
| Mar 25, 2014 |
|
$ 22,000,000 |
| May 21, 2013 |
|
Undisclosed amount |
| Nov 30, 2012 |
|
Undisclosed amount |
