Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001493152-22-003948-index.html | 2022-02-11 15:09:07 | |
| 0001493152-22-003948.txt | 2022-02-11 15:09:07 | |
 0001493152-22-003948-xbrl.zip | 89029 | 2022-02-11 15:09:07 |
| ex31-1.htm | 17791 | 2022-02-11 15:09:07 |
| ex31-2.htm | 17635 | 2022-02-11 15:09:07 |
| ex32-1.htm | 6336 | 2022-02-11 15:09:07 |
| FilingSummary.xml | 14004 | 2022-02-11 15:09:07 |
| Financial_Report.xlsx | 33521 | 2022-02-11 15:09:07 |
| form10-k.htm | 428672 | 2022-02-11 15:09:07 |
 form10-k_001.jpg | 7246 | 2022-02-11 15:09:07 |
| form10-k_htm.xml | 144046 | 2022-02-11 15:09:07 |
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| R1.htm | 70152 | 2022-02-11 15:09:07 |
| R10.htm | 13873 | 2022-02-11 15:09:07 |
| R11.htm | 19939 | 2022-02-11 15:09:07 |
| R12.htm | 21221 | 2022-02-11 15:09:07 |
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| R15.htm | 10583 | 2022-02-11 15:09:07 |
| R16.htm | 17747 | 2022-02-11 15:09:07 |
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| R18.htm | 19470 | 2022-02-11 15:09:07 |
| R19.htm | 7734 | 2022-02-11 15:09:07 |
| R2.htm | 49145 | 2022-02-11 15:09:07 |
| R20.htm | 4453 | 2022-02-11 15:09:07 |
| R21.htm | 14625 | 2022-02-11 15:09:07 |
| R22.htm | 14185 | 2022-02-11 15:09:07 |
| R23.htm | 10748 | 2022-02-11 15:09:07 |
| R24.htm | 4224 | 2022-02-11 15:09:07 |
| R3.htm | 19543 | 2022-02-11 15:09:07 |
| R4.htm | 46177 | 2022-02-11 15:09:07 |
| R5.htm | 21542 | 2022-02-11 15:09:07 |
| R6.htm | 40810 | 2022-02-11 15:09:07 |
| R7.htm | 6429 | 2022-02-11 15:09:07 |
| R8.htm | 20620 | 2022-02-11 15:09:07 |
| R9.htm | 9336 | 2022-02-11 15:09:07 |
| report.css | 2767 | 2022-02-11 15:09:07 |
| Show.js | 1085 | 2022-02-11 15:09:07 |
| ytfd-20211231.xsd | 14066 | 2022-02-11 15:09:07 |
| ytfd-20211231_cal.xml | 24004 | 2022-02-11 15:09:07 |
| ytfd-20211231_def.xml | 48429 | 2022-02-11 15:09:07 |
| ytfd-20211231_lab.xml | 118635 | 2022-02-11 15:09:07 |
| ytfd-20211231_pre.xml | 97089 | 2022-02-11 15:09:07 |