XML 134 R47.htm IDEA: XBRL DOCUMENT
v3.20.4

Capital Stock (Tables) | 12 Months Ended
--- | ---
Jan. 30, 2021
Stockholders' Equity Note [Abstract] |
Schedule of Share Repurchases Under Current and Previously Authorized Share Repurchase Programs | Repurchases of Common Stock. The company made the following repurchases during fiscal 2021 (all shares repurchased have been canceled).We did not repurchase any of our common stock during fiscal 2020 or fiscal 2019.
Period |  | Number of Shares Repurchased |  | Total Consideration (In thousands) |  | Average Price Per Share
Fiscal 2021 |  | 1,324,381 |  |  | $ | 100,000 |  |  | $ | 75.51 |

X
- Definition Tabular disclosure of share repurchases under the current and prior share repurchase authorizations. + References No definition available. + Details
Name: | dy_ScheduleOfShareRepurchasesCurrentAndPriorShareRepurchaseAuthorizationsTableTextBlock
Namespace Prefix: | dy_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration