Additional Balance Sheet and Cash Flow Information - Inventories, Net (Details) - USD ($) $ in Thousands	Jun. 27, 2021	Dec. 31, 2020	Jun. 28, 2020
Inventory
Raw materials and work in process	$ 245,562	$ 211,979	$ 199,300
Inventory at lower of FIFO cost or net realizable value	511,731	577,580	485,765
Excess of FIFO over LIFO cost	(54,083)	(54,083)	(56,426)
Total inventories, net	457,648	523,497	429,339
Certificates of Deposit
Inventory
Deposits	259,400	80,000	18,000
Motorcycles
Inventory
Finished goods	187,708	281,132	180,895
Parts & Accessories and General Merchandise
Inventory
Finished goods	$ 78,461	$ 84,469	$ 105,570

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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The aggregate carrying amount as of the balance sheet date of items held by the entity which are partially completed at the time of measurement and unprocessed items that will go through the production process and become part of the final product. Includes supplies used directly or indirectly in the manufacturing or production process. This element may be used when the reporting entity combines work in process and raw materials into an aggregate amount.

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