Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of increase (decrease) in accumulated depreciation, depletion and amortization of property, plant and equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount of increase (decrease) of physical assets used in the normal conduct of business and not intended for resale, from reclassification, impairment, donation, or changes classified as other. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 73,290	$ 49,298
Less accumulated depreciation	(37,748)	(33,829)
Total property and equipment, net	35,542	15,469
Transfers of equipment between inventory and property and equipment, net	4,437	827	$ 1,449
Depreciation and amortization	6,200	3,600	$ 4,200
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,590	694
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 12,737	3,845
Building \| Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	10 years
Building \| Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	43 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 40,411	28,777
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	2 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	10 years
Office furniture & equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,047	1,345
Office furniture & equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	3 years
Office furniture & equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	7 years
Computer hardware & software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,773	3,408
Computer hardware & software \| Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	3 years
Computer hardware & software \| Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Leasehold and building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 10,728	10,558
Leasehold and building improvements \| Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Leasehold and building improvements \| Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	15 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4	671
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	5 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment, useful life	7 years
Leased Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 13,600	8,100
Less accumulated depreciation	$ (4,700)	$ (4,600)