| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/26/19 | 10-K/A | Annual report pursuant to Section 13 and 15(d) |
|
21 | |
| 03/08/19 | 10-K | Annual report pursuant to Section 13 and 15(d) |
|
   |
135 |
| 03/07/18 | 10-K | Annual report pursuant to Section 13 and 15(d) |
|
|
156 |
