Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001603923-17-000050-index-headers.html | 2017-02-14 17:50:51 | |
| 0001603923-17-000050-index.html | 2017-02-14 17:50:51 | |
| 0001603923-17-000050.txt | 2017-02-14 17:50:51 | |
 0001603923-17-000050-xbrl.zip | 520461 | 2017-02-14 17:50:51 |
| ex121-ratioofearningstofix.htm | 45441 | 2017-02-14 17:50:51 |
| ex211-significantsubswft12.htm | 26904 | 2017-02-14 17:50:51 |
| ex231-kpmgconsentwft123116.htm | 5964 | 2017-02-14 17:50:51 |
| ex311ceo302certwft123116.htm | 14662 | 2017-02-14 17:50:51 |
| ex312cfo302certwft123116.htm | 14984 | 2017-02-14 17:50:51 |
| ex321ceo906certwft123116.htm | 11585 | 2017-02-14 17:50:51 |
| ex322cfo906certwft123116.htm | 11517 | 2017-02-14 17:50:51 |
| FilingSummary.xml | 70913 | 2017-02-14 17:50:51 |
| Financial_Report.xlsx | 187920 | 2017-02-14 17:50:51 |
| R1.htm | 28424 | 2017-02-14 17:50:51 |
| R10.htm | 163503 | 2017-02-14 17:50:51 |
| R100.htm | 22897 | 2017-02-14 17:50:51 |
| R101.htm | 43113 | 2017-02-14 17:50:51 |
| R102.htm | 17830 | 2017-02-14 17:50:51 |
| R103.htm | 22413 | 2017-02-14 17:50:51 |
| R104.htm | 108446 | 2017-02-14 17:50:51 |
| R105.htm | 58774 | 2017-02-14 17:50:51 |
| R106.htm | 19348 | 2017-02-14 17:50:51 |
| R107.htm | 16776 | 2017-02-14 17:50:51 |
| R108.htm | 120697 | 2017-02-14 17:50:51 |
| R109.htm | 14647 | 2017-02-14 17:50:51 |
| R11.htm | 18750 | 2017-02-14 17:50:51 |
| R110.htm | 31680 | 2017-02-14 17:50:51 |
| R111.htm | 172614 | 2017-02-14 17:50:51 |
| R112.htm | 77763 | 2017-02-14 17:50:51 |
| R113.htm | 143173 | 2017-02-14 17:50:51 |
| R114.htm | 89272 | 2017-02-14 17:50:51 |
| R115.htm | 129298 | 2017-02-14 17:50:51 |
| R116.htm | 6463 | 2017-02-14 17:50:51 |
| R117.htm | 25048 | 2017-02-14 17:50:51 |
| R118.htm | 22369 | 2017-02-14 17:50:51 |
| R119.htm | 19453 | 2017-02-14 17:50:51 |
| R12.htm | 14420 | 2017-02-14 17:50:51 |
| R13.htm | 10276 | 2017-02-14 17:50:51 |
| R14.htm | 16298 | 2017-02-14 17:50:51 |
| R15.htm | 13443 | 2017-02-14 17:50:51 |
| R16.htm | 43875 | 2017-02-14 17:50:51 |
| R17.htm | 56026 | 2017-02-14 17:50:51 |
| R18.htm | 8634 | 2017-02-14 17:50:51 |
| R19.htm | 38327 | 2017-02-14 17:50:51 |
| R2.htm | 78543 | 2017-02-14 17:50:51 |
| R20.htm | 63259 | 2017-02-14 17:50:51 |
| R21.htm | 22718 | 2017-02-14 17:50:51 |
| R22.htm | 55685 | 2017-02-14 17:50:51 |
| R23.htm | 69230 | 2017-02-14 17:50:51 |
| R24.htm | 19187 | 2017-02-14 17:50:51 |
| R25.htm | 88653 | 2017-02-14 17:50:51 |
| R26.htm | 24695 | 2017-02-14 17:50:51 |
| R27.htm | 120154 | 2017-02-14 17:50:51 |
| R28.htm | 21741 | 2017-02-14 17:50:51 |
| R29.htm | 16529 | 2017-02-14 17:50:51 |
| R3.htm | 23258 | 2017-02-14 17:50:51 |
| R30.htm | 223463 | 2017-02-14 17:50:51 |
| R31.htm | 840931 | 2017-02-14 17:50:51 |
| R32.htm | 5312 | 2017-02-14 17:50:51 |
| R33.htm | 64103 | 2017-02-14 17:50:51 |
| R34.htm | 56009 | 2017-02-14 17:50:51 |
| R35.htm | 125848 | 2017-02-14 17:50:51 |
| R36.htm | 8079 | 2017-02-14 17:50:51 |
| R37.htm | 158939 | 2017-02-14 17:50:51 |
| R38.htm | 12705 | 2017-02-14 17:50:51 |
| R39.htm | 15125 | 2017-02-14 17:50:51 |
| R4.htm | 89803 | 2017-02-14 17:50:51 |
| R40.htm | 40758 | 2017-02-14 17:50:51 |
| R41.htm | 55624 | 2017-02-14 17:50:51 |
| R42.htm | 17661 | 2017-02-14 17:50:51 |
| R43.htm | 53767 | 2017-02-14 17:50:51 |
| R44.htm | 12171 | 2017-02-14 17:50:51 |
| R45.htm | 39175 | 2017-02-14 17:50:51 |
| R46.htm | 58334 | 2017-02-14 17:50:51 |
| R47.htm | 18215 | 2017-02-14 17:50:51 |
| R48.htm | 80773 | 2017-02-14 17:50:51 |
| R49.htm | 15519 | 2017-02-14 17:50:51 |
| R5.htm | 18544 | 2017-02-14 17:50:51 |
| R50.htm | 106088 | 2017-02-14 17:50:51 |
| R51.htm | 13266 | 2017-02-14 17:50:51 |
| R52.htm | 221781 | 2017-02-14 17:50:51 |
| R53.htm | 835564 | 2017-02-14 17:50:51 |
| R54.htm | 62301 | 2017-02-14 17:50:51 |
| R55.htm | 10077 | 2017-02-14 17:50:51 |
| R56.htm | 40349 | 2017-02-14 17:50:51 |
| R57.htm | 19216 | 2017-02-14 17:50:51 |
| R58.htm | 7470 | 2017-02-14 17:50:51 |
| R59.htm | 5166 | 2017-02-14 17:50:51 |
| R6.htm | 49446 | 2017-02-14 17:50:51 |
| R60.htm | 20398 | 2017-02-14 17:50:51 |
| R61.htm | 14007 | 2017-02-14 17:50:51 |
| R62.htm | 25336 | 2017-02-14 17:50:51 |
| R63.htm | 69877 | 2017-02-14 17:50:51 |
| R64.htm | 60868 | 2017-02-14 17:50:51 |
| R65.htm | 153617 | 2017-02-14 17:50:51 |
| R66.htm | 110709 | 2017-02-14 17:50:51 |
| R67.htm | 19033 | 2017-02-14 17:50:51 |
| R68.htm | 36364 | 2017-02-14 17:50:51 |
| R69.htm | 27519 | 2017-02-14 17:50:51 |
| R7.htm | 108974 | 2017-02-14 17:50:51 |
| R70.htm | 40601 | 2017-02-14 17:50:51 |
| R71.htm | 12497 | 2017-02-14 17:50:51 |
| R72.htm | 5583 | 2017-02-14 17:50:51 |
| R73.htm | 10938 | 2017-02-14 17:50:51 |
| R74.htm | 25104 | 2017-02-14 17:50:51 |
| R75.htm | 22563 | 2017-02-14 17:50:51 |
| R76.htm | 10218 | 2017-02-14 17:50:51 |
| R77.htm | 13342 | 2017-02-14 17:50:51 |
| R78.htm | 15137 | 2017-02-14 17:50:51 |
| R79.htm | 15278 | 2017-02-14 17:50:51 |
| R8.htm | 72238 | 2017-02-14 17:50:51 |
| R80.htm | 119648 | 2017-02-14 17:50:51 |
| R81.htm | 99738 | 2017-02-14 17:50:51 |
| R82.htm | 19857 | 2017-02-14 17:50:51 |
| R83.htm | 151233 | 2017-02-14 17:50:51 |
| R84.htm | 27035 | 2017-02-14 17:50:51 |
| R85.htm | 24235 | 2017-02-14 17:50:51 |
| R86.htm | 29291 | 2017-02-14 17:50:51 |
| R87.htm | 22163 | 2017-02-14 17:50:51 |
| R88.htm | 30891 | 2017-02-14 17:50:51 |
| R89.htm | 34225 | 2017-02-14 17:50:51 |
| R9.htm | 16272 | 2017-02-14 17:50:51 |
| R90.htm | 7695 | 2017-02-14 17:50:51 |
| R91.htm | 5610 | 2017-02-14 17:50:51 |
| R92.htm | 57367 | 2017-02-14 17:50:51 |
| R93.htm | 7637 | 2017-02-14 17:50:51 |
| R94.htm | 31688 | 2017-02-14 17:50:51 |
| R95.htm | 31353 | 2017-02-14 17:50:51 |
| R96.htm | 26088 | 2017-02-14 17:50:51 |
| R97.htm | 33023 | 2017-02-14 17:50:51 |
| R98.htm | 15951 | 2017-02-14 17:50:51 |
| R99.htm | 11077 | 2017-02-14 17:50:51 |
| report.css | 2768 | 2017-02-14 17:50:51 |
| Show.js | 1411 | 2017-02-14 17:50:51 |
| wft-20161231.xml | 5472242 | 2017-02-14 17:50:51 |
| wft-20161231.xsd | 95443 | 2017-02-14 17:50:51 |
| wft-20161231_cal.xml | 142659 | 2017-02-14 17:50:51 |
| wft-20161231_def.xml | 728371 | 2017-02-14 17:50:51 |
| wft-20161231_lab.xml | 1303137 | 2017-02-14 17:50:51 |
| wft-20161231_pre.xml | 968782 | 2017-02-14 17:50:51 |
| wft201610-k.htm | 3511839 | 2017-02-14 17:50:51 |
 wft201610-k_chartx41579.jpg | 64331 | 2017-02-14 17:50:51 |