| November 9, 2018 | 10-Q/A | Amendment to quarterly report [Sections 13 or 15(d)] | PDF: Amendment to quarterly report [Sections 13 or 15(d)] |
| November 9, 2018 | 10-Q | Quarterly report [Sections 13 or 15(d)] | PDF: Quarterly report [Sections 13 or 15(d)] |
| October 31, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| September 17, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| August 8, 2018 | 10-Q | Quarterly report [Sections 13 or 15(d)] | PDF: Quarterly report [Sections 13 or 15(d)] |
| July 31, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| May 31, 2018 | SD | Specialized Disclosure Report | PDF: Specialized Disclosure Report |
| May 31, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| May 9, 2018 | 10-Q | Quarterly report [Sections 13 or 15(d)] | PDF: Quarterly report [Sections 13 or 15(d)] |
| April 26, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| April 23, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| April 6, 2018 | DEF 14A | Other definitive proxy statements | PDF: Other definitive proxy statements |
| April 6, 2018 | DEFA14A | Additional definitive proxy soliciting materials | PDF: Additional definitive proxy soliciting materials |
| April 3, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| March 1, 2018 | 10-K | Annual report [Section 13 or 15(d), not S-K Item 405] | PDF: Annual report [Section 13 or 15(d), not S-K Item 405] |
| March 1, 2018 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| November 8, 2017 | 10-Q | Quarterly report [Sections 13 or 15(d)] | PDF: Quarterly report [Sections 13 or 15(d)] |
| November 2, 2017 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| August 4, 2017 | 10-Q | Quarterly report [Sections 13 or 15(d)] | PDF: Quarterly report [Sections 13 or 15(d)] |
| May 31, 2017 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| May 30, 2017 | SD | Specialized Disclosure Report | PDF: Specialized Disclosure Report |
| May 16, 2017 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| May 9, 2017 | 10-Q | Quarterly report [Sections 13 or 15(d)] | PDF: Quarterly report [Sections 13 or 15(d)] |
| April 24, 2017 | 8-K | Report of unscheduled material events or corporate event | PDF: Report of unscheduled material events or corporate event |
| April 5, 2017 | DEF 14A | Other definitive proxy statements | PDF: Other definitive proxy statements |