| Quarterly Report (Ended Jul 31, 2020) | | |
| Quarterly Report (Ended Apr 30, 2020) | | |
| Annual Report (Ended Jan 31, 2020) | | |
| Quarterly Report (Ended Oct 31, 2019) | | |
| Quarterly Report (Ended Jul 31, 2019) | | |
| Quarterly Report (Ended Apr 30, 2019) | | |
| Annual Report (Ended Jan 31, 2019) | | |
| Quarterly Report (Ended Oct 31, 2018) | | |
| Quarterly Report (Ended Jul 31, 2018) | | |
| Quarterly Report (Ended Apr 30, 2018) | | |
| Annual Report (Ended Jan 31, 2018) | | |
| Quarterly Report (Ended Oct 31, 2017) | | |
| Quarterly Report (Ended Jul 31, 2017) | | |
| Quarterly Report (Ended Apr 30, 2017) | | |
| Annual Report (Ended Jan 31, 2017) | | |
| Quarterly Report (Ended Oct 31, 2016) | | |
| Quarterly Report (Ended Jul 31, 2016) | | |
| Quarterly Report (Ended Apr 30, 2016) | | |
| Annual Report (Ended Jan 31, 2016) | | |
| Quarterly Report (Ended Oct 31, 2015) | | |
| Quarterly Report (Ended Jul 31, 2015) | | |
| Quarterly Report (Ended Apr 30, 2015) | | |
| Annual Report (Ended Jan 31, 2015) | | |
| Quarterly Report (Ended Oct 31, 2014) | | |
| Quarterly Report (Ended Jul 31, 2014) | | |
| Quarterly Report (Ended Apr 30, 2014) | | |
| Annual Report (Ended Jan 31, 2014) | | |
| Annual Report (Ended Jan 31, 2013) | | |
| Annual Report (Ended Jan 31, 2012) | | |