Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000798949-21-000016-index-headers.html | 2021-04-30 15:39:20 | |
| 0000798949-21-000016-index.html | 2021-04-30 15:39:20 | |
| 0000798949-21-000016.txt | 2021-04-30 15:39:20 | |
 0000798949-21-000016-xbrl.zip | 370170 | 2021-04-30 15:39:20 |
| FilingSummary.xml | 4442 | 2021-04-30 15:39:20 |
| Financial_Report.xlsx | 9853 | 2021-04-30 15:39:20 |
| MetaLinks.json | 1100568 | 2021-04-30 15:39:20 |
| R1.htm | 58979 | 2021-04-30 15:39:20 |
| R2.htm | 14738 | 2021-04-30 15:39:20 |
| R3.htm | 14426 | 2021-04-30 15:39:20 |
| R4.htm | 9168 | 2021-04-30 15:39:20 |
| report.css | 2767 | 2021-04-30 15:39:20 |
| Show.js | 1085 | 2021-04-30 15:39:20 |
| unt-20201231.htm | 424967 | 2021-04-30 15:39:20 |
| unt-20201231.xsd | 130818 | 2021-04-30 15:39:20 |
| unt-20201231x10kaxexx313.htm | 3572 | 2021-04-30 15:39:20 |
| unt-20201231x10kaxexx314.htm | 3614 | 2021-04-30 15:39:20 |
| unt-20201231_cal.xml | 168324 | 2021-04-30 15:39:20 |
| unt-20201231_def.xml | 718250 | 2021-04-30 15:39:20 |
 unt-20201231_g1.jpg | 13982 | 2021-04-30 15:39:20 |
| unt-20201231_htm.xml | 48132 | 2021-04-30 15:39:20 |
| unt-20201231_lab.xml | 1449041 | 2021-04-30 15:39:20 |
| unt-20201231_pre.xml | 1032771 | 2021-04-30 15:39:20 |