Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-20-006998-index-headers.html | 2020-05-07 16:54:12 | |
| 0001628280-20-006998-index.html | 2020-05-07 16:54:12 | |
| 0001628280-20-006998.txt | 2020-05-07 16:54:12 | |
 0001628280-20-006998-xbrl.zip | 358450 | 2020-05-07 16:54:12 |
| ex-311q12020.htm | 10939 | 2020-05-07 16:54:12 |
| ex-312q12020.htm | 10920 | 2020-05-07 16:54:12 |
| ex-321q12020.htm | 9484 | 2020-05-07 16:54:12 |
| ex101.htm | 16127 | 2020-05-07 16:54:12 |
| FilingSummary.xml | 36913 | 2020-05-07 16:54:12 |
| Financial_Report.xlsx | 73871 | 2020-05-07 16:54:12 |
| MetaLinks.json | 555252 | 2020-05-07 16:54:12 |
| R1.htm | 55586 | 2020-05-07 16:54:12 |
| R10.htm | 38415 | 2020-05-07 16:54:12 |
| R11.htm | 21550 | 2020-05-07 16:54:12 |
| R12.htm | 17014 | 2020-05-07 16:54:12 |
| R13.htm | 33901 | 2020-05-07 16:54:12 |
| R14.htm | 42719 | 2020-05-07 16:54:12 |
| R15.htm | 8867 | 2020-05-07 16:54:12 |
| R16.htm | 86092 | 2020-05-07 16:54:12 |
| R17.htm | 6084 | 2020-05-07 16:54:12 |
| R18.htm | 59456 | 2020-05-07 16:54:12 |
| R19.htm | 4749 | 2020-05-07 16:54:12 |
| R2.htm | 65184 | 2020-05-07 16:54:12 |
| R20.htm | 33341 | 2020-05-07 16:54:12 |
| R21.htm | 33851 | 2020-05-07 16:54:12 |
| R22.htm | 36939 | 2020-05-07 16:54:12 |
| R23.htm | 35497 | 2020-05-07 16:54:12 |
| R24.htm | 21332 | 2020-05-07 16:54:12 |
| R25.htm | 17122 | 2020-05-07 16:54:12 |
| R26.htm | 24695 | 2020-05-07 16:54:12 |
| R27.htm | 36403 | 2020-05-07 16:54:12 |
| R28.htm | 84254 | 2020-05-07 16:54:12 |
| R29.htm | 52765 | 2020-05-07 16:54:12 |
| R3.htm | 10738 | 2020-05-07 16:54:12 |
| R30.htm | 34411 | 2020-05-07 16:54:12 |
| R31.htm | 12500 | 2020-05-07 16:54:12 |
| R32.htm | 18402 | 2020-05-07 16:54:12 |
| R33.htm | 11866 | 2020-05-07 16:54:12 |
| R34.htm | 6292 | 2020-05-07 16:54:12 |
| R35.htm | 22364 | 2020-05-07 16:54:12 |
| R36.htm | 24257 | 2020-05-07 16:54:12 |
| R37.htm | 20838 | 2020-05-07 16:54:12 |
| R38.htm | 4853 | 2020-05-07 16:54:12 |
| R39.htm | 15610 | 2020-05-07 16:54:12 |
| R4.htm | 55887 | 2020-05-07 16:54:12 |
| R40.htm | 11534 | 2020-05-07 16:54:12 |
| R41.htm | 84274 | 2020-05-07 16:54:12 |
| R42.htm | 15199 | 2020-05-07 16:54:12 |
| R43.htm | 30410 | 2020-05-07 16:54:12 |
| R44.htm | 20332 | 2020-05-07 16:54:12 |
| R45.htm | 17657 | 2020-05-07 16:54:12 |
| R46.htm | 12039 | 2020-05-07 16:54:12 |
| R47.htm | 28935 | 2020-05-07 16:54:12 |
| R48.htm | 25641 | 2020-05-07 16:54:12 |
| R49.htm | 51889 | 2020-05-07 16:54:12 |
| R5.htm | 61620 | 2020-05-07 16:54:12 |
| R50.htm | 11968 | 2020-05-07 16:54:12 |
| R51.htm | 55208 | 2020-05-07 16:54:12 |
| R52.htm | 12080 | 2020-05-07 16:54:12 |
| R53.htm | 46838 | 2020-05-07 16:54:12 |
| R54.htm | 9869 | 2020-05-07 16:54:12 |
| R55.htm | 10108 | 2020-05-07 16:54:12 |
| R56.htm | 16360 | 2020-05-07 16:54:12 |
| R57.htm | 14732 | 2020-05-07 16:54:12 |
| R58.htm | 12658 | 2020-05-07 16:54:12 |
| R6.htm | 72233 | 2020-05-07 16:54:12 |
| R7.htm | 13435 | 2020-05-07 16:54:12 |
| R8.htm | 55085 | 2020-05-07 16:54:12 |
| R9.htm | 11971 | 2020-05-07 16:54:12 |
| report.css | 2767 | 2020-05-07 16:54:12 |
| Show.js | 1085 | 2020-05-07 16:54:12 |
| xfor-20200331.htm | 1903437 | 2020-05-07 16:54:12 |
| xfor-20200331.xsd | 62168 | 2020-05-07 16:54:12 |
| xfor-20200331_cal.xml | 78453 | 2020-05-07 16:54:12 |
| xfor-20200331_def.xml | 198365 | 2020-05-07 16:54:12 |
 xfor-20200331_g1.jpg | 70840 | 2020-05-07 16:54:12 |
| xfor-20200331_htm.xml | 1158753 | 2020-05-07 16:54:12 |
| xfor-20200331_lab.xml | 631988 | 2020-05-07 16:54:12 |
| xfor-20200331_pre.xml | 374211 | 2020-05-07 16:54:12 |