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Equity-Based Compensation (Tables) | 12 Months Ended
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Dec. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Remaining Unrecognized Compensation Expense For Unvested Awards |
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﻿2018 |  | $ 14,071
﻿2019 |  | 10,393
﻿2020 |  | 4,597
﻿2021 |  | 2,680
﻿ |  | $ 31,741
﻿ |  |
﻿The cost above is expected to be recognized over a weighted-average period of 2.87 years. |  |
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﻿
Stock-Settled Stock Appreciation Rights [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Fair Value Assumptions |
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﻿ |  | Year ended |  |
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﻿ |  | 2015 |  | 2016 |  | 2017 |  |
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﻿Expected volatility (1) |  | 44.0% |  | 47.5% |  | N/A |  |
﻿Risk-free interest rate (2) |  | 1.3% |  | 1.1% |  | N/A |  |
﻿Expected life (3) |  | 3.8 yrs. |  | 3.7 yrs. |  | N/A |  |
﻿Expected dividend yield (4) |  | 0.0% |  | 0.0% |  | N/A |  |
﻿Weighted-average exercise price (5) |  | $67.71 |  | $63.16 |  | N/A |  |
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﻿(1) The Company utilizes historical volatility of the trading price of its common stock. |
﻿(2) Risk-free interest rate is based on the U.S. Treasury yield curve with respect to the expected life of the award. |
﻿(3) Depending upon the terms of the award, one of two methods will be used to calculate expected life: |
﻿ (i) a weighted-average that includes historical settlement data of the Company’s equity awards and a |
﻿ hypothetical holding period, or (ii) the simplified method. |
﻿(4) The Company historically has not paid and currently has no plan to pay dividends. |  |
﻿(5) Exercise price is the closing price of the Company's common stock on the date of grant. |  |
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Schedule Of Stock-Settled Stock Appreciation Rights Activity |
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﻿ |  | Shares |  | Weighted-average exercise price |  | Weighted-average remaining contractual term |  | Aggregate intrinsic value* |
﻿Outstanding at December 31, 2016 |  | 3,391 |  | $ 54.69 |  | 3.1 |  | $ 36,169 |
﻿Granted |  | - |  | - |  |  |  |  |
﻿Exercised |  | (884) |  | 33.63 |  |  |  |  |
﻿Forfeited |  | (181) |  | 55.78 |  |  |  |  |
﻿Expired |  | (36) |  | 65.26 |  |  |  |  |
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﻿Outstanding at December 30, 2017 |  | 2,290 |  | $ 62.49 |  | 2.6 |  | $ 26,703 |
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﻿Exercisable at December 30, 2017 |  | 420 |  | $ 53.12 |  | 2.1 |  | $ 8,782 |
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﻿ ﻿ * Aggregate intrinsic value is defined as the difference between the current market value at the reporting date (the closing price of the Company's common stock on the last trading day of the period) and the exercise price of awards that were in-the-money. The closing price of the Company's common stock at December 31, 2016, and December 30, 2017, was $61.20 and $74.05, respectively.
Restricted Stock Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Restricted Stock Unit Activity |
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﻿ |  | Shares |  | Weighted-average grant date fair value
﻿Outstanding at December 31, 2016 |  | - |  | $ -
﻿Granted |  | 92 |  | 59.42
﻿Vested |  | - |  | -
﻿Forfeited |  | - |  | -
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﻿Outstanding at December 30, 2017 |  | 92 |  | $ 59.42
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﻿
Deferred Stock Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Deferred Stock Unit Activity |
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﻿ |  | Shares |  | Weighted-average grant date fair value
﻿Nonvested at December 31, 2016 |  | 5 |  | $ 61.60
﻿Granted |  | 8 |  | 58.00
﻿Vested |  | (10) |  | 59.14
﻿Forfeited |  | - |  | -
﻿ |  |  |  |
﻿Nonvested at December 30, 2017 |  | 3 |  | $ 60.24
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﻿

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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