XML 35 R23.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Capital Stock | 9 Months Ended
--- | ---
Oct. 27, 2018
Stockholders' Equity Note [Abstract] |
Capital Stock | Capital Stock Repurchases of Common Stock. On August 29, 2018, the Company announced that its Board of Directors had authorized a new $150.0 million program to repurchase shares of the Company’s outstanding common stock through February 2020 in open market or private transactions. The repurchase authorization replaced the Company’s previous repurchase authorization which expired in August 2018. At expiration, approximately $95.2 million of the previous authorization remained outstanding. As of October 27, 2018, $150.0 million remained available for repurchases through February 2020 under the Company’s share repurchase program. During the nine months ended October 28, 2017, the Company repurchased and canceled 600,000 shares of its common stock, at an average price of $91.31 per share, for $54.8 million. The Company did not repurchase any of its common stock during the nine months ended October 27, 2018.

X
- Definition The entire disclosure of share repurchases under the current and prior share repurchase authorizations. + References No definition available. + Details
Name: | dy_CapitalStockTextBlock
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