OTHER LONG-TERM LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Liabilities, Noncurrent [Abstract]
Accrued pension liabilities	$ 19,124	$ 25,407
Operating Lease, Liability, Noncurrent	11,352	17,137
Foreign government grant (1)	9,015	10,279
Contingencies	1,199	2,694
Income tax liabilities	111	804
Other	7,470	7,108
Other Liabilities, Noncurrent	$ 48,271	$ 63,429

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due beyond one year or the operating cycle, whichever is longer. Alternate captions include income taxes payable, noncurrent.

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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as noncurrent.

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