Percentage Of Fair Market Value Of Common Stock

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- Definition

Period Of Vesting Of Restrictions On Restricted Stock Issued

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Target Award Available for Grant

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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.

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- Definition

The amount of expense, net of income tax, 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.

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No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement.

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- Definition

Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-based Compensation - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 01, 2017	Apr. 28, 2018	Apr. 29, 2017	Apr. 30, 2016	Apr. 25, 2015	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recognized		$ 18,400	$ 17,710	$ 16,898
After-tax stock-based compensation expense		13,037	$ 11,910	11,120
Compensation cost before income taxes related to non-vested awards yet to be recognized		$ 30,276
Total compensation cost expected to be recognized over a weighted average period		1 year 10 months
Number of shares outstanding (in shares)		1,206,000	1,192,000
Weighted average remaining contractual lives of options outstanding		7 years 5 months
Weighted average remaining contractual lives of options exercisable		5 years
Stock options exercised, intrinsic value		$ 88	$ 266	901
Stock options exercised, cash received		324	958	3,173
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options		$ 3	36	$ 854
Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting, percentage	50.00%
Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting, percentage	50.00%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance units vested		43,000
Performance Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance units vested		0		0
Chief Executive Officer \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in share)	56,481
2015 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock reserved for issuance (in shares)						4,000,000
Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for awards (in shares)		2,115,000
Prior Equity Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding (in shares)		1,202,000
Employee Stock Option Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years
Employee Stock Option Plans \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Employee Stock Option Plans \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Restricted Stock And Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of restricted stock awards vested in period		$ 6,939	$ 8,528	$ 19,805
Restricted Stock And Restricted Stock Units \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock vesting period		5 years
Restricted Stock And Restricted Stock Units \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock vesting period		7 years
Restricted Stock And Restricted Stock Units \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock vesting period		9 years
Restricted Stock And Restricted Stock Units \| Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock vesting period		3 years
Restricted Stock And Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum restriction period for restricted stock and restricted stock units		1 year
Restricted Stock And Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum restriction period for restricted stock and restricted stock units		3 years
Performance Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock vesting period		3 years	3 years	3 years	3 years
Total fair value of restricted stock awards vested in period		$ 0		$ 2,966
Performance Unit Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares to be received at vesting		0.00%
Performance Unit Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares to be received at vesting		200.00%
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock reserved for issuance (in shares)		6,750,000
Number of shares available for awards (in shares)		670,000
Percentage of fair market value of the common stock		85.00%
Capital Accumulation Plan (CAP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock reserved for issuance (in shares)		6,000,000
Number of shares available for awards (in shares)		1,835,000
Minimum restriction period for restricted stock and restricted stock units		3 years
Percentage of fair market value of the common stock		75.00%