Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-20-011985-index-headers.html | 2020-08-06 16:09:42 | |
| 0001628280-20-011985-index.html | 2020-08-06 16:09:42 | |
| 0001628280-20-011985.txt | 2020-08-06 16:09:42 | |
 0001628280-20-011985-xbrl.zip | 153294 | 2020-08-06 16:09:42 |
| art-20200806.htm | 52874 | 2020-08-06 16:09:42 |
| art-20200806.xsd | 2459 | 2020-08-06 16:09:42 |
| art-20200806_cal.xml | 747 | 2020-08-06 16:09:42 |
| art-20200806_def.xml | 1692 | 2020-08-06 16:09:42 |
| art-20200806_htm.xml | 12959 | 2020-08-06 16:09:42 |
| art-20200806_lab.xml | 25298 | 2020-08-06 16:09:42 |
| art-20200806_pre.xml | 13227 | 2020-08-06 16:09:42 |
 cold-q22020physicaland1.jpg | 74011 | 2020-08-06 16:09:42 |
| FilingSummary.xml | 1795 | 2020-08-06 16:09:42 |
| Financial_Report.xlsx | 5497 | 2020-08-06 16:09:42 |
 graph111.jpg | 40607 | 2020-08-06 16:09:42 |
 graph211.jpg | 43828 | 2020-08-06 16:09:42 |
 graph311.jpg | 39969 | 2020-08-06 16:09:42 |
 graph411.jpg | 55872 | 2020-08-06 16:09:42 |
 graph511.jpg | 40636 | 2020-08-06 16:09:42 |
 graph711.jpg | 43642 | 2020-08-06 16:09:42 |
 image31.jpg | 22848 | 2020-08-06 16:09:42 |
| MetaLinks.json | 18128 | 2020-08-06 16:09:42 |
| q22020-pressrelease.htm | 1176695 | 2020-08-06 16:09:42 |
| q22020-quarterlysupple.htm | 2882512 | 2020-08-06 16:09:42 |
 q22020supplementcovero1.jpg | 252689 | 2020-08-06 16:09:42 |
| R1.htm | 40202 | 2020-08-06 16:09:42 |
| report.css | 2767 | 2020-08-06 16:09:42 |
| Show.js | 1085 | 2020-08-06 16:09:42 |