Fair Value Measurements Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 29, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Other investments in equity securities	$ 1,718	$ 1,718
7% debentures
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt Instrument, Interest Rate, Stated Percentage	7.00%	7.00%
Reported Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash equivalents	$ 333,761	$ 365,901
Other investments in equity securities	1,718	1,718
Reported Value Measurement \| Series 2022-1 Class A-2-I Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	97,750	98,500
Reported Value Measurement \| Series 2022-1 Class A-2-II Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	387,134	390,134
Reported Value Measurement \| Series 2021-1 Class A-2-I Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	419,894	423,269
Reported Value Measurement \| Series 2021-1 Class A-2-II Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	628,655	633,530
Reported Value Measurement \| Series 2019-1 Class A-2-I Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	354,673	357,673
Reported Value Measurement \| Series 2019-1 Class A-2-II Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	399,748	403,123
Reported Value Measurement \| Series 2018-1 Class A-2-II Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	437,537	441,099
Reported Value Measurement \| 7% debentures
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	48,744	48,237
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash equivalents	333,761	365,901
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Other investments in equity securities	1,718	1,718
Estimate of Fair Value Measurement \| Series 2022-1 Class A-2-I Notes \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	95,635	92,289
Estimate of Fair Value Measurement \| Series 2022-1 Class A-2-II Notes \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	367,777	370,577
Estimate of Fair Value Measurement \| Series 2021-1 Class A-2-I Notes \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	379,609	362,572
Estimate of Fair Value Measurement \| Series 2021-1 Class A-2-II Notes \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	553,411	530,581
Estimate of Fair Value Measurement \| Series 2019-1 Class A-2-I Notes \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	348,204	341,606
Estimate of Fair Value Measurement \| Series 2019-1 Class A-2-II Notes \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	388,131	374,058
Estimate of Fair Value Measurement \| Series 2018-1 Class A-2-II Notes \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	425,767	412,754
Estimate of Fair Value Measurement \| 7% debentures \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Debt instrument	$ 49,586	$ 49,431

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of investment in equity security without readily determinable fair value.

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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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