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Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($) | 3 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 29, 2018 | Dec. 31, 2015 | Dec. 28, 2017 | Dec. 29, 2016 | May 28, 2015
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Depreciation |  | $ 23,893,000 | $ 51,542,000 | $ 42,085,000 | $ 38,368,000
Percentage Of Cash Dividends |  |  | 110.00% |  |
Senior Notes, Noncurrent |  |  | $ 129,143,000 | 90,286,000 |
Inventory, Net, Total |  |  | $ 4,062,000 | 4,437,000 |
Concentration Risk, Labor Subject to Collective Bargaining Arrangements |  |  | As of December 28, 2017, 7% of the Companys employees were covered by a collective bargaining agreement, of which 1% are covered by an agreement that will expire in one year. As of December 29, 2016, 7% of the Companys employees were covered by a collective bargaining agreement, of which 2% were covered by an agreement that expired within in one year. |  |
Interest Costs Capitalized |  | 32,000 | $ 400,000 | 277,000 | 194,000
Amortization of Debt Issuance Costs |  | $ 258,000 | 308,000 | 303,000 | $ 449,000
Deferred Revenue, Current |  |  | $ 32,711,000 | $ 28,485,000 |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  | 456,000 | 250,000 | 14,000 | 434,000
Decrease (increase) in restricted cash |  | $ (9,259,000) | $ 967,000 | $ 12,553,000 | $ (728,000)
Accounting Standards Update 2017-09 [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Operating Expenses |  |  | $ 1,712,000 | $ 1,519,000 |
Accounting Standards Update 2014-09 [Member] | Scenario, Forecast [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Cumulative Effect on Retained Earnings, Net of Tax | $ 3,500,000 |  |  |  |
Minimum [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Investment Option Exercise Price |  | $ 19.74 | $ 31.20 | $ 23.37 | $ 18.34
Maximum [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 50.00% |  |
Investment Option Exercise Price |  | $ 23.37 | $ 31.55 | $ 31.55 | $ 23.37
Corporate Joint Venture One [Member] | Minimum [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership Interest In Joint Ventures |  |  | 50.00% |  |
Corporate Joint Venture Two [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership Interest In Joint Ventures |  |  | 50.00% |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Available-for-sale Securities, Fair Value Disclosure |  |  | $ 70,000 | $ 93,000 |
Trading Securities, Fair Value Disclosure |  |  | 3,983,000 | 1,927,000 |
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Interest Rate Fair Value Hedge Liability at Fair Value |  |  | 13,000 | $ 6,000 |
Senior Notes, Noncurrent |  |  | $ 125,188,000 |  |

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