Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001493152-21-004251-index-headers.html | 2021-02-18 15:32:46 | |
| 0001493152-21-004251-index.html | 2021-02-18 15:32:46 | |
| 0001493152-21-004251.txt | 2021-02-18 15:32:46 | |
 0001493152-21-004251-xbrl.zip | 31606 | 2021-02-18 15:32:46 |
| ex31-1.htm | 18929 | 2021-02-18 15:32:46 |
| ex31-2.htm | 18875 | 2021-02-18 15:32:46 |
| ex32-1.htm | 6427 | 2021-02-18 15:32:46 |
| FilingSummary.xml | 13746 | 2021-02-18 15:32:46 |
| Financial_Report.xlsx | 32047 | 2021-02-18 15:32:46 |
| form10-k.htm | 345571 | 2021-02-18 15:32:46 |
| R1.htm | 35409 | 2021-02-18 15:32:46 |
| R10.htm | 6440 | 2021-02-18 15:32:46 |
| R11.htm | 14707 | 2021-02-18 15:32:46 |
| R12.htm | 18045 | 2021-02-18 15:32:46 |
| R13.htm | 5304 | 2021-02-18 15:32:46 |
| R14.htm | 32515 | 2021-02-18 15:32:46 |
| R15.htm | 9533 | 2021-02-18 15:32:46 |
| R16.htm | 16047 | 2021-02-18 15:32:46 |
| R17.htm | 12416 | 2021-02-18 15:32:46 |
| R18.htm | 18928 | 2021-02-18 15:32:46 |
| R19.htm | 13989 | 2021-02-18 15:32:46 |
| R2.htm | 40123 | 2021-02-18 15:32:46 |
| R20.htm | 7757 | 2021-02-18 15:32:46 |
| R21.htm | 4480 | 2021-02-18 15:32:46 |
| R22.htm | 14200 | 2021-02-18 15:32:46 |
| R23.htm | 10755 | 2021-02-18 15:32:46 |
| R3.htm | 18933 | 2021-02-18 15:32:46 |
| R4.htm | 41209 | 2021-02-18 15:32:46 |
| R5.htm | 17407 | 2021-02-18 15:32:46 |
| R6.htm | 36553 | 2021-02-18 15:32:46 |
| R7.htm | 5830 | 2021-02-18 15:32:46 |
| R8.htm | 14013 | 2021-02-18 15:32:46 |
| R9.htm | 7641 | 2021-02-18 15:32:46 |
| report.css | 2767 | 2021-02-18 15:32:46 |
| Show.js | 1085 | 2021-02-18 15:32:46 |
| ytfd-20201231.xml | 107514 | 2021-02-18 15:32:46 |
| ytfd-20201231.xsd | 14214 | 2021-02-18 15:32:46 |
| ytfd-20201231_cal.xml | 23923 | 2021-02-18 15:32:46 |
| ytfd-20201231_def.xml | 18526 | 2021-02-18 15:32:46 |
| ytfd-20201231_lab.xml | 89983 | 2021-02-18 15:32:46 |
| ytfd-20201231_pre.xml | 73586 | 2021-02-18 15:32:46 |