Share Based Compensation Plans (SARs) (Details) - Stock Appreciation Rights (SARs) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of period, shares	514,313	537,930	790,290
Granted, shares	111,230	69,752	59,265
Exercised, shares	(212,767)	(93,369)	(281,444)
Forfeited, shares		(8,329)	(30,181)
Outstanding, end of period, shares	404,447	514,313	537,930	790,290
Exercisable, end of period, shares	230,440	391,428	443,998
Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value & Average Remaining Contractual Life [Abstract]
Outstanding, beginning of period, aggregate intrinsic value	$ 7,254	$ 23,263	$ 32,659
Exercised, aggregate intrinsic value	9,379	4,731	16,378
Outstanding, end period, aggregate intrinsic value	7,615	7,254	23,263	$ 32,659
Exercisable, end of period, aggregate intrinsic value	$ 5,675	$ 7,254	$ 22,588
Outstanding, beginning of period, weighted average remaining contractual term	4 years 8 months 12 days	4 years 7 months 6 days	4 years 6 months	4 years 7 months 6 days
Outstanding, end of period, weighted average remaining contractual term	4 years 8 months 12 days	4 years 7 months 6 days	4 years 6 months	4 years 7 months 6 days
Exercisable, end of period, weighted average remaining contractual term	2 years 6 months	3 years 4 months 24 days	3 years 8 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of period, weighted average exercise price	$ 39.01	$ 32.00	$ 24.47
Granted, weighted average exercise price	57.29	65.00	77.00
Exercised, weighted average exercise price	19.68	18.03	17.96
Forfeited, weighted average exercise price		67.24	54.28
Outstanding, end of period, weighted average exercise price	53.62	39.01	32.00	$ 24.47
Exercisable, end of period, weighted average exercise price	$ 47.92	$ 30.20	$ 24.28

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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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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Number of share options (or share units) exercised during the current period.

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