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 write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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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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Property, Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	$ 202,441		$ 202,441		$ 196,583
Less: accumulated depreciation and amortization	(86,000)		(86,000)		(76,412)
Total property, plant and equipment, net	116,441		116,441		120,171
Depreciation and amortization expense	3,600	$ 3,400	9,800	$ 9,100
Impairment of long-lived assets			9,540	$ 7,275
Land
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	13,450		13,450		13,450
Buildings
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	73,285		73,285		70,381
Machinery, equipment and fixtures
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	82,596		82,596		77,854
Computer software
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	24,223		24,223		23,644
Construction in progress
Property, Plant & Equipment [Line Items]
Property, plant & equipment, gross	$ 8,887		$ 8,887		$ 11,254