Expense recognized during the period for liability based awards.

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- Definition

Percentage of grants with market-based vesting provisions.

+ References

No definition available.

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- Definition

Represents percentages of employees target award.

+ References

No definition available.

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- Definition

Represents percentages of share based payment award that vests each year from the date of grant.

+ References

No definition available.

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- Definition

Performance period to achieve certain financial goals relating to performance awards.

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No definition available.

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- Definition

The intrinsic value of liability-based payment equity instruments, excluding stock or unit options, granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

No definition available.

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- Definition

For share-based compensation awards, this represents the common share equivalent per award share or unit.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Paragraph 28

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The intrinsic value of equity-based payment equity instruments, excluding stock or unit options, granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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-Paragraph A240

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 1

-Subparagraph (SAB TOPIC 14.D.2)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

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- Definition

Net number of share options (or share units) granted during the period.

+ References

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph A240

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Stock-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended									3 Months Ended	9 Months Ended
	Jan. 25, 2014	Jan. 26, 2013	Jan. 25, 2014	Jan. 26, 2013	Jul. 27, 2013 Stock Options [Member]	Jan. 25, 2014 Stock Options [Member]	Jan. 25, 2014 Stock Options [Member] Minimum [Member]	Jan. 25, 2014 Stock Options [Member] Maximum [Member]	Jan. 25, 2014 Stock Appreciation Rights (SARs) [Member]	Jan. 25, 2014 Stock Appreciation Rights (SARs) [Member] 2013 Grant Remeasured [Member]	Jan. 25, 2014 Stock Appreciation Rights (SARs) [Member] 2014 Grant Remeasured [Member]	Jan. 25, 2014 Stock Appreciation Rights (SARs) [Member] Minimum [Member]	Jan. 25, 2014 Stock Appreciation Rights (SARs) [Member] Maximum [Member]	Jan. 25, 2014 Restricted Stock Units (RSUs) [Member]	Jul. 27, 2013 Restricted Stock Units (RSUs) [Member] Employees [Member]	Jan. 25, 2014 Restricted Stock Units (RSUs) [Member] Director [Member]	Jan. 25, 2014 Restricted Stock Units (RSUs) [Member] Minimum [Member]	Jan. 25, 2014 Restricted Stock Units (RSUs) [Member] Maximum [Member]	Jan. 25, 2014 Performance Share Units [Member]	Jan. 25, 2014 Performance Share Units [Member] 2013 Grant Remeasured [Member]	Jan. 25, 2014 Performance Share Units [Member] Monte Carlo Valuation Model [Member]	Jan. 25, 2014 Performance Share Units [Member] Monte Carlo Valuation Model [Member] 2013 Grant Remeasured [Member]	Jan. 25, 2014 Performance-Based Shares [Member]	Jan. 25, 2014 Performance-Based Shares [Member] Monte Carlo Valuation Model [Member]	Jan. 25, 2014 Performance based units and Performance based shares [Member]	Jan. 25, 2014 Performance based units and Performance based shares [Member] Minimum [Member]	Jan. 25, 2014 Performance based units and Performance based shares [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)						174,595
Equity instruments other than options, granted in period (in shares/units)									141,546						125,007	34,200			35,083				191,410
Percentage of grants with market-based vesting (in hundredths)																									20.00%
Percentages of share based payment award percent vesting each year from date of grant (in hundredths)									25.00%					25.00%
Vesting period of stock-based award							1 year	4 years				1 year	4 years				1 year	4 years
Percentage of grants with performance vesting (in hundredths)																									80.00%	50.00%	200.00%
Performance awards, performance period																									3 years
Award common share equivalent (in shares)														1
Fair value of shares (in dollars per unit)														$ 27.19		$ 21.20			$ 26.59	$ 26.83	$ 42.93	$ 47.56
Fair value of granted performance-based shares (in dollars per share)																							$ 18.58	$ 26.08
Stock-based compensation expense recognized consolidated statement of income
Equity-based awards expense	$ 1,700	$ 1,239	$ 7,371	$ 8,198
Liability-based awards expense (income)	2,203	314	5,993	1,205
Total stock-based compensation expense	$ 3,903	$ 1,553	$ 13,364	$ 9,403
Fair value assumptions [Abstract]
Risk-free interest rate (in hundredths)					0.84%					0.69%	1.58%
Dividend rate (in hundredths)					0.84%					0.90%	0.90%
Expected life in years					5 years					3 years 5 months 16 days	4 years 4 months 20 days
Stock price volatility (in hundredths)					81.30%					50.44%	53.14%
Fair value per share (in dollars per share)					$ 11.63					$ 16.31	$ 13.94