XML 47 R35.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Stock-Based Awards (Tables) | 9 Months Ended
--- | ---
Apr. 25, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Stock-based Compensation Expense and Related Tax Benefit Recognized | Stock-based compensation expense and the related tax benefit recognized related to stock options and restricted share units during the three and nine months ended April 25, 2015 and April 26, 2014 were as follows:
| For the Three Months Ended |  | For the Nine Months Ended
| April 25, 2015 |  | April 26, 2014 |  | April 25, 2015 |  | April 26, 2014
| (Dollars in thousands)
Stock-based compensation | $ | 3,219 |  |  | $ | 2,671 |  |  | $ | 10,773 |  |  | $ | 9,721 |
Tax benefit recognized in the statement of operations | $ | 1,248 |  |  | $ | 1,071 |  |  | $ | 4,221 |  |  | $ | 3,736 |
Schedule of Share-based Compensation, Stock Options Award Activity | The following table summarizes stock option award activity during the nine months ended April 25, 2015:
| Stock Options
| Shares |  | Weighted Average Exercise Price
Outstanding as of July 26, 2014 | 2,044,893 |  |  | $ | 18.68 |
Granted | 90,686 |  |  | $ | 31.46 |
Options exercised | (536,538 | ) |  | $ | 12.75 |
Forfeited or canceled | (484,126 | ) |  | $ | 34.48 |
Outstanding as of April 25, 2015 | 1,114,915 |  |  | $ | 15.72 |
Exercisable options as of April 25, 2015 | 856,647 |  |  | $ | 12.77 |
Schedule of Share-based Compensation, RSU and Performance RSU Activity | The following table summarizes RSU and Performance RSU activity during the nine months ended April 25, 2015:
| Restricted Stock
| RSUs |  | Performance RSUs
| Share Units |  | Weighted Average Grant Price |  | Share Units |  | Weighted Average Grant Price
Outstanding as of July 26, 2014 | 398,931 |  |  | $ | 20.61 |  |  | 1,190,184 |  |  | $ | 21.73 |
Granted | 100,360 |  |  | $ | 31.15 |  |  | 416,987 |  |  | $ | 31.03 |
Share units vested | (134,764 | ) |  | $ | 19.55 |  |  | (317,908 | ) |  | $ | 21.59 |
Forfeited or canceled | (13,781 | ) |  | $ | 19.27 |  |  | (333,977 | ) |  | $ | 19.98 |
Outstanding as of April 25, 2015 | 350,746 |  |  | $ | 24.09 |  |  | 955,286 |  |  | $ | 26.45 |

X
- Definition Schedule of Stock Based Compensation Expense and Related Tax + References No definition available. + Details
Name: | dy_ScheduleOfStockBasedCompensationExpenseAndRelatedTaxTableTextBlock
Namespace Prefix: | dy_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration