Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-21-005202-index-headers.html | 2021-03-19 16:49:44 | |
| 0001628280-21-005202-index.html | 2021-03-19 16:49:44 | |
| 0001628280-21-005202.txt | 2021-03-19 16:49:44 | |
 0001628280-21-005202-xbrl.zip | 798494 | 2021-03-19 16:49:44 |
| aptuitamendment2.htm | 21482 | 2021-03-19 16:49:44 |
| cadavidemploymentagreement.htm | 80767 | 2021-03-19 16:49:44 |
| descriptionofcommonstock.htm | 21317 | 2021-03-19 16:49:44 |
| dfci.htm | 201639 | 2021-03-19 16:49:44 |
| ex-311q42020.htm | 9396 | 2021-03-19 16:49:44 |
| ex-312q42020.htm | 9378 | 2021-03-19 16:49:44 |
| ex-321q42020.htm | 4198 | 2021-03-19 16:49:44 |
| ex-322q42020.htm | 4152 | 2021-03-19 16:49:44 |
| ex_211xlistofsubsidiaries2.htm | 5115 | 2021-03-19 16:49:44 |
| ex_231consentofindependent.htm | 2162 | 2021-03-19 16:49:44 |
| FilingSummary.xml | 49337 | 2021-03-19 16:49:44 |
| Financial_Report.xlsx | 137311 | 2021-03-19 16:49:44 |
 image_01.jpg | 5837 | 2021-03-19 16:49:44 |
 image_01a.jpg | 16101 | 2021-03-19 16:49:44 |
 image_01b.jpg | 1387617 | 2021-03-19 16:49:44 |
| MetaLinks.json | 796265 | 2021-03-19 16:49:44 |
| R1.htm | 66747 | 2021-03-19 16:49:44 |
| R10.htm | 24801 | 2021-03-19 16:49:44 |
| R11.htm | 52262 | 2021-03-19 16:49:44 |
| R12.htm | 16108 | 2021-03-19 16:49:44 |
| R13.htm | 11595 | 2021-03-19 16:49:44 |
| R14.htm | 28141 | 2021-03-19 16:49:44 |
| R15.htm | 35224 | 2021-03-19 16:49:44 |
| R16.htm | 9390 | 2021-03-19 16:49:44 |
| R17.htm | 40891 | 2021-03-19 16:49:44 |
| R18.htm | 15275 | 2021-03-19 16:49:44 |
| R19.htm | 56078 | 2021-03-19 16:49:44 |
| R2.htm | 73607 | 2021-03-19 16:49:44 |
| R20.htm | 68408 | 2021-03-19 16:49:44 |
| R21.htm | 32074 | 2021-03-19 16:49:44 |
| R22.htm | 5950 | 2021-03-19 16:49:44 |
| R23.htm | 12199 | 2021-03-19 16:49:44 |
| R24.htm | 120298 | 2021-03-19 16:49:44 |
| R25.htm | 36703 | 2021-03-19 16:49:44 |
| R26.htm | 48637 | 2021-03-19 16:49:44 |
| R27.htm | 15449 | 2021-03-19 16:49:44 |
| R28.htm | 11704 | 2021-03-19 16:49:44 |
| R29.htm | 17167 | 2021-03-19 16:49:44 |
| R3.htm | 10760 | 2021-03-19 16:49:44 |
| R30.htm | 27844 | 2021-03-19 16:49:44 |
| R31.htm | 40180 | 2021-03-19 16:49:44 |
| R32.htm | 51219 | 2021-03-19 16:49:44 |
| R33.htm | 68910 | 2021-03-19 16:49:44 |
| R34.htm | 32260 | 2021-03-19 16:49:44 |
| R35.htm | 34564 | 2021-03-19 16:49:44 |
| R36.htm | 24012 | 2021-03-19 16:49:44 |
| R37.htm | 14611 | 2021-03-19 16:49:44 |
| R38.htm | 17410 | 2021-03-19 16:49:44 |
| R39.htm | 12848 | 2021-03-19 16:49:44 |
| R4.htm | 75854 | 2021-03-19 16:49:44 |
| R40.htm | 8602 | 2021-03-19 16:49:44 |
| R41.htm | 13887 | 2021-03-19 16:49:44 |
| R42.htm | 21465 | 2021-03-19 16:49:44 |
| R43.htm | 16042 | 2021-03-19 16:49:44 |
| R44.htm | 11048 | 2021-03-19 16:49:44 |
| R45.htm | 24899 | 2021-03-19 16:49:44 |
| R46.htm | 16178 | 2021-03-19 16:49:44 |
| R47.htm | 18548 | 2021-03-19 16:49:44 |
| R48.htm | 24111 | 2021-03-19 16:49:44 |
| R49.htm | 14016 | 2021-03-19 16:49:44 |
| R5.htm | 105993 | 2021-03-19 16:49:44 |
| R50.htm | 12911 | 2021-03-19 16:49:44 |
| R51.htm | 14582 | 2021-03-19 16:49:44 |
| R52.htm | 9778 | 2021-03-19 16:49:44 |
| R53.htm | 120348 | 2021-03-19 16:49:44 |
| R54.htm | 15005 | 2021-03-19 16:49:44 |
| R55.htm | 58672 | 2021-03-19 16:49:44 |
| R56.htm | 21958 | 2021-03-19 16:49:44 |
| R57.htm | 18419 | 2021-03-19 16:49:44 |
| R58.htm | 6822 | 2021-03-19 16:49:44 |
| R59.htm | 28588 | 2021-03-19 16:49:44 |
| R6.htm | 8136 | 2021-03-19 16:49:44 |
| R60.htm | 17264 | 2021-03-19 16:49:44 |
| R61.htm | 32799 | 2021-03-19 16:49:44 |
| R62.htm | 75092 | 2021-03-19 16:49:44 |
| R63.htm | 63839 | 2021-03-19 16:49:44 |
| R64.htm | 12211 | 2021-03-19 16:49:44 |
| R65.htm | 50232 | 2021-03-19 16:49:44 |
| R66.htm | 13014 | 2021-03-19 16:49:44 |
| R67.htm | 10271 | 2021-03-19 16:49:44 |
| R68.htm | 11310 | 2021-03-19 16:49:44 |
| R69.htm | 23422 | 2021-03-19 16:49:44 |
| R7.htm | 100255 | 2021-03-19 16:49:44 |
| R70.htm | 25387 | 2021-03-19 16:49:44 |
| R71.htm | 22504 | 2021-03-19 16:49:44 |
| R72.htm | 10891 | 2021-03-19 16:49:44 |
| R73.htm | 8598 | 2021-03-19 16:49:44 |
| R74.htm | 24756 | 2021-03-19 16:49:44 |
| R75.htm | 16526 | 2021-03-19 16:49:44 |
| R76.htm | 15519 | 2021-03-19 16:49:44 |
| R77.htm | 10994 | 2021-03-19 16:49:44 |
| R78.htm | 45103 | 2021-03-19 16:49:44 |
| R8.htm | 19857 | 2021-03-19 16:49:44 |
| R9.htm | 94074 | 2021-03-19 16:49:44 |
| report.css | 2768 | 2021-03-19 16:49:44 |
| Show.js | 1086 | 2021-03-19 16:49:44 |
| taveresemploymentagreement.htm | 75050 | 2021-03-19 16:49:44 |
| xfor-20201231.htm | 2436119 | 2021-03-19 16:49:44 |
| xfor-20201231.xsd | 76764 | 2021-03-19 16:49:44 |
| xfor-20201231_cal.xml | 102944 | 2021-03-19 16:49:44 |
| xfor-20201231_def.xml | 378884 | 2021-03-19 16:49:44 |
 xfor-20201231_g1.jpg | 131420 | 2021-03-19 16:49:44 |
 xfor-20201231_g2.jpg | 49513 | 2021-03-19 16:49:44 |
 xfor-20201231_g3.jpg | 116062 | 2021-03-19 16:49:44 |
| xfor-20201231_htm.xml | 1564253 | 2021-03-19 16:49:44 |
| xfor-20201231_lab.xml | 839969 | 2021-03-19 16:49:44 |
| xfor-20201231_pre.xml | 596674 | 2021-03-19 16:49:44 |