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Inventories (Tables)

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

Schedule of Inventory

The Company’s significant components of inventory at December 31, 2021 and 2020 were as follows (in thousands):

			December 31, 2021						December 31, 2020
Raw materials and parts			$	97,053					$	151,531
Work in process			24,618						15,946
Finished goods			182,954						229,212
Gross inventories			304,625						396,689
Inventory reserve			(62,885)						(144,942)
Inventories			$	241,740					$	251,747

Schedule of Inventory Reserve

The change in the amounts of the inventory reserve during the two year period ended December 31, 2021 is as follows (in thousands):

Period ended			Balance at beginning of period						Charged to expense						Deductions or other						Balance at end of period
December 31, 2020			66,075						100,794						(21,927)						$	144,942
December 31, 2021			144,942						8,096						(90,153)						$	62,885

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Tabular disclosure of the carrying 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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