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Number of available shares authorized for issuance under share-based payment arrangement.

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The percentage of options exercisable granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Percentage of non vesting of share-based compensation awards.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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The percentage rate used to calculate dividend payments on preferred stock.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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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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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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The maximum number of shares (or other type of equity) that have been approved for issuance in the equity-based payment transaction.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Shareholders' Equity and Stock-Based Compensation - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 26, 2019	Dec. 27, 2018	Dec. 28, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Dividend Rate, Percentage	110.00%
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	11,687,500
Stock Repurchased During Period, Shares	30,139	82,722	28,898
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,756,561
Share-based Goods and Nonemployee Services Transaction, Shares Approved for Issuance	4,937,500
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	750,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Available Shares Authorized	430,582
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	588,834
Allocated Share-based Compensation Expense	$ 3,523,000	$ 2,691,000	$ 2,411,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 1,127,000	2,617,000	1,227,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	6 years 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	4 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	1,587,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 25.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 14,567,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	14,693,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	11,579,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	2,135,000	$ 10,373,000	$ 1,770,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 5,314,000
Employee Service Share-based Compensation, Nonvested Awards, Period for Recognition, Stock Options	2 years 8 months 12 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$ 3,015,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price for Options Outstanding	$ 10.00
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price for Options Outstanding	$ 41.90
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Period for Recognition, Stock Options	2 years 9 months 18 days
Option One [Member] \| After Two Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Grants in Period Exercisable Percentage	40.00%
Option One [Member] \| After Three Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Grants in Period Exercisable Percentage	60.00%
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	25.00%
Option One [Member] \| After Four Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Grants in Period Exercisable Percentage	80.00%
Option One [Member] \| After Five Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Grants in Period Exercisable Percentage	100.00%
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	50.00%
Option One [Member] \| After Ten Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	75.00%
Option One [Member] \| Upon Retirement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	100.00%
Option Two [Member] \| After Two Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Grants in Period Exercisable Percentage	50.00%
Option Two [Member] \| After Three Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Grants in Period Exercisable Percentage	75.00%
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	50.00%
Option Two [Member] \| After Four Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Grants in Period Exercisable Percentage	100.00%
Option Two [Member] \| After Five Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	100.00%
Option Three [Member] \| After Two Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	50.00%
Option Three [Member] \| After Four Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sharebased Compensation Arrangement by Sharebased Payment Award Award Non Vesting Rights Percentage	100.00%