OTHER FINANCIAL STATEMENT INFORMATION - Other Current Liabilities (Details) - USD ($) $ in Thousands	Oct. 01, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued employee compensation and related expenses	$ 19,118	$ 23,131
Customers’ advances and deposits	22,534	3,385
Other	23,311	23,817
Total	$ 64,963	$ 50,333

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer, classified as current.

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 55
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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

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