Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-20-009521-index-headers.html | 2020-05-06 08:56:51 | |
| 0001437749-20-009521-index.html | 2020-05-06 08:56:51 | |
| 0001437749-20-009521.txt | 2020-05-06 08:56:51 | |
 0001437749-20-009521-xbrl.zip | 42934 | 2020-05-06 08:56:51 |
| ex_184649.htm | 485370 | 2020-05-06 08:56:51 |
 ex_184649img001.jpg | 4962 | 2020-05-06 08:56:51 |
| FilingSummary.xml | 1765 | 2020-05-06 08:56:51 |
| Financial_Report.xlsx | 5824 | 2020-05-06 08:56:51 |
| MetaLinks.json | 19884 | 2020-05-06 08:56:51 |
| ottr-20200505.xsd | 3698 | 2020-05-06 08:56:51 |
| ottr-20200505_def.xml | 11974 | 2020-05-06 08:56:51 |
| ottr-20200505_lab.xml | 16019 | 2020-05-06 08:56:51 |
| ottr-20200505_pre.xml | 12183 | 2020-05-06 08:56:51 |
| ottr20200504_8k.htm | 27764 | 2020-05-06 08:56:51 |
| ottr20200504_8k_htm.xml | 2669 | 2020-05-06 08:56:51 |
| R1.htm | 40416 | 2020-05-06 08:56:51 |
| report.css | 2767 | 2020-05-06 08:56:51 |
| Show.js | 1085 | 2020-05-06 08:56:51 |