The number of authorized stock that is reduced by the issuance of other than stock option awards.

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The maximum percentage of the shares issued compared to the unit amount of the equity instruments, other than options, that are exercised to acquire the shares issued.

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No definition available.

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The rate at which an employee stock option is exercisable.

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

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Aggregate dividends paid during the period for each share of common stock outstanding.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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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- Definition

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

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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).

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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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No definition available.

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

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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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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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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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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Shareholders' Equity - Narrative (Details)	3 Months Ended	12 Months Ended
Shareholders' Equity - Narrative (Details)	Apr. 02, 2017 USD ($)	Dec. 29, 2019 USD ($) $ / shares shares	Dec. 30, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Jun. 30, 2017 USD ($)	Jul. 03, 2016 USD ($)	May 31, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares) \| shares		120,000,000
Common stock, par value (in dollars per share) \| $ / shares		$ 0.10
Common stock, cash dividends paid (in dollars per share) \| $ / shares		$ 0.26	$ 0.26	$ 0.25
Stock based compensation rate at which stock options exercisable		100.00%
Number of shares authorized for issuance or transfer (in shares) \| shares							5,161,020
Number of authorized stock reduced by issuance of other than stock option award							1.33
Weighted-average remaining contractual life of options outstanding (less than)		1 year
Weighted-average remaining contractual life of options exercisable (less than)		1 year
Aggregate intrinsic value of options outstanding		$ 100,000
Aggregate intrinsic value of options exercisable		100,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expenses		$ 0	$ 0	$ 0
Stock Options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Expiration period		3 years
Stock Options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Expiration period		10 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expenses		$ 3,300,000	$ 4,100,000	$ 2,800,000
Restricted stock awards granted (in shares) \| shares		223,500	194,000	253,000
Unrecognized compensation cost related to unvested restricted stock		$ 3,400,000
Restricted Stock \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Restricted Stock \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expenses		$ 5,400,000	$ 10,400,000	$ 4,500,000
Restricted stock awards granted (in shares) \| shares		344,500
Number of shares that may be issued in settlement of the performance shares to the award recipient, upper limit (percentage)		200.00%
Unrecognized compensation expense		$ 3,100,000
Performance Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Restricted Stock and Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense, tax benefit		$ 1,400,000	2,400,000	2,600,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount to be repurchased					$ 100,000,000	$ 50,000,000
Stock repurchased and retired, value	$ 50,000,000	$ 156,000	$ 61,000	$ 463,000
Stock repurchased and retired (in shares) \| shares		1,556,000	615,000	4,628,300
Weighted average purchase price (in dollars per share) \| $ / shares		$ 16.13	$ 23.54	$ 19.76