Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000067215-22-000039-index-headers.html | 2022-05-26 16:39:25 | |
| 0000067215-22-000039-index.html | 2022-05-26 16:39:25 | |
| 0000067215-22-000039.txt | 2022-05-26 16:39:25 | |
 0000067215-22-000039-xbrl.zip | 263076 | 2022-05-26 16:39:25 |
| dy-20220430.htm | 1352900 | 2022-05-26 16:39:25 |
| dy-20220430.xsd | 57192 | 2022-05-26 16:39:25 |
| dy-20220430_cal.xml | 87982 | 2022-05-26 16:39:25 |
| dy-20220430_def.xml | 252326 | 2022-05-26 16:39:25 |
| dy-20220430_htm.xml | 1207939 | 2022-05-26 16:39:25 |
| dy-20220430_lab.xml | 596245 | 2022-05-26 16:39:25 |
| dy-20220430_pre.xml | 461095 | 2022-05-26 16:39:25 |
| dyq1fy202310qex311.htm | 11332 | 2022-05-26 16:39:25 |
| dyq1fy202310qex312.htm | 11344 | 2022-05-26 16:39:25 |
| dyq1fy202310qex321.htm | 6215 | 2022-05-26 16:39:25 |
| dyq1fy202310qex322.htm | 6235 | 2022-05-26 16:39:25 |
| FilingSummary.xml | 49755 | 2022-05-26 16:39:25 |
| Financial_Report.xlsx | 104344 | 2022-05-26 16:39:25 |
| MetaLinks.json | 678434 | 2022-05-26 16:39:25 |
| R1.htm | 52357 | 2022-05-26 16:39:25 |
| R10.htm | 5962 | 2022-05-26 16:39:25 |
| R11.htm | 15832 | 2022-05-26 16:39:25 |
| R12.htm | 28909 | 2022-05-26 16:39:25 |
| R13.htm | 41610 | 2022-05-26 16:39:25 |
| R14.htm | 22973 | 2022-05-26 16:39:25 |
| R15.htm | 12435 | 2022-05-26 16:39:25 |
| R16.htm | 21826 | 2022-05-26 16:39:25 |
| R17.htm | 35651 | 2022-05-26 16:39:25 |
| R18.htm | 18075 | 2022-05-26 16:39:25 |
| R19.htm | 31574 | 2022-05-26 16:39:25 |
| R2.htm | 121234 | 2022-05-26 16:39:25 |
| R20.htm | 12102 | 2022-05-26 16:39:25 |
| R21.htm | 54554 | 2022-05-26 16:39:25 |
| R22.htm | 9238 | 2022-05-26 16:39:25 |
| R23.htm | 13687 | 2022-05-26 16:39:25 |
| R24.htm | 6298 | 2022-05-26 16:39:25 |
| R25.htm | 38365 | 2022-05-26 16:39:25 |
| R26.htm | 39106 | 2022-05-26 16:39:25 |
| R27.htm | 12613 | 2022-05-26 16:39:25 |
| R28.htm | 23307 | 2022-05-26 16:39:25 |
| R29.htm | 28421 | 2022-05-26 16:39:25 |
| R3.htm | 19686 | 2022-05-26 16:39:25 |
| R30.htm | 75106 | 2022-05-26 16:39:25 |
| R31.htm | 23341 | 2022-05-26 16:39:25 |
| R32.htm | 21404 | 2022-05-26 16:39:25 |
| R33.htm | 20923 | 2022-05-26 16:39:25 |
| R34.htm | 33489 | 2022-05-26 16:39:25 |
| R35.htm | 14410 | 2022-05-26 16:39:25 |
| R36.htm | 33257 | 2022-05-26 16:39:25 |
| R37.htm | 11723 | 2022-05-26 16:39:25 |
| R38.htm | 45452 | 2022-05-26 16:39:25 |
| R39.htm | 12221 | 2022-05-26 16:39:25 |
| R4.htm | 62008 | 2022-05-26 16:39:25 |
| R40.htm | 39084 | 2022-05-26 16:39:25 |
| R41.htm | 47999 | 2022-05-26 16:39:25 |
| R42.htm | 4505 | 2022-05-26 16:39:25 |
| R43.htm | 47241 | 2022-05-26 16:39:25 |
| R44.htm | 16707 | 2022-05-26 16:39:25 |
| R45.htm | 16136 | 2022-05-26 16:39:25 |
| R46.htm | 10121 | 2022-05-26 16:39:25 |
| R47.htm | 10346 | 2022-05-26 16:39:25 |
| R48.htm | 4457 | 2022-05-26 16:39:25 |
| R49.htm | 20786 | 2022-05-26 16:39:25 |
| R5.htm | 21205 | 2022-05-26 16:39:25 |
| R50.htm | 16030 | 2022-05-26 16:39:25 |
| R51.htm | 15461 | 2022-05-26 16:39:25 |
| R52.htm | 16060 | 2022-05-26 16:39:25 |
| R53.htm | 41989 | 2022-05-26 16:39:25 |
| R54.htm | 4800 | 2022-05-26 16:39:25 |
| R55.htm | 10005 | 2022-05-26 16:39:25 |
| R56.htm | 23478 | 2022-05-26 16:39:25 |
| R57.htm | 5334 | 2022-05-26 16:39:25 |
| R58.htm | 28212 | 2022-05-26 16:39:25 |
| R59.htm | 17863 | 2022-05-26 16:39:25 |
| R6.htm | 54167 | 2022-05-26 16:39:25 |
| R60.htm | 13745 | 2022-05-26 16:39:25 |
| R61.htm | 16378 | 2022-05-26 16:39:25 |
| R62.htm | 7083 | 2022-05-26 16:39:25 |
| R63.htm | 20587 | 2022-05-26 16:39:25 |
| R64.htm | 14866 | 2022-05-26 16:39:25 |
| R65.htm | 19000 | 2022-05-26 16:39:25 |
| R66.htm | 47227 | 2022-05-26 16:39:25 |
| R67.htm | 18351 | 2022-05-26 16:39:25 |
| R68.htm | 26746 | 2022-05-26 16:39:25 |
| R69.htm | 11059 | 2022-05-26 16:39:25 |
| R7.htm | 100670 | 2022-05-26 16:39:25 |
| R70.htm | 10014 | 2022-05-26 16:39:25 |
| R71.htm | 16939 | 2022-05-26 16:39:25 |
| R72.htm | 15537 | 2022-05-26 16:39:25 |
| R73.htm | 8579 | 2022-05-26 16:39:25 |
| R74.htm | 9935 | 2022-05-26 16:39:25 |
| R75.htm | 20249 | 2022-05-26 16:39:25 |
| R76.htm | 10388 | 2022-05-26 16:39:25 |
| R77.htm | 34874 | 2022-05-26 16:39:25 |
| R78.htm | 23787 | 2022-05-26 16:39:25 |
| R79.htm | 36885 | 2022-05-26 16:39:25 |
| R8.htm | 9524 | 2022-05-26 16:39:25 |
| R80.htm | 21437 | 2022-05-26 16:39:25 |
| R81.htm | 25856 | 2022-05-26 16:39:25 |
| R82.htm | 23265 | 2022-05-26 16:39:25 |
| R83.htm | 17446 | 2022-05-26 16:39:25 |
| R9.htm | 10789 | 2022-05-26 16:39:25 |
| report.css | 2767 | 2022-05-26 16:39:25 |
| Show.js | 1085 | 2022-05-26 16:39:25 |