XML 62 R45.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Capital Stock (Tables) | 6 Months Ended
--- | ---
Jan. 27, 2018
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 share repurchases during fiscal 2015, 2016, and 2017 and the 2018 transition period (all shares repurchased have been canceled):
Period |  | Number of Shares Repurchased |  | Total Consideration (In thousands) |  | Average Price Per Share
Fiscal 2015 |  | 1,669,924 |  |  | $ | 87,146 |  |  | $ | 52.19 |
Fiscal 2016 |  | 2,511,578 |  |  | $ | 169,997 |  |  | $ | 67.69 |
Fiscal 2017 |  | 713,006 |  |  | $ | 62,909 |  |  | $ | 88.23 |
Six months ended January 27, 2018 |  | 200,000 |  |  | $ | 16,875 |  |  | $ | 84.38 |

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