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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Future cash outflow to pay for purchases of fixed assets that have occurred.

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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 505,044	$ 399,649
Less: accumulated depreciation and amortization	(185,551)	(148,156)
Property, plant and equipment, net	319,493	251,493
Depreciation expense	48,500	32,300	$ 26,900
Accrued capital expenditures		2,600	$ 3,800	$ 400
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	17,454	12,670
Building and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	83,509	73,433
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	372,086	286,418
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	10,402	8,200
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 21,593	$ 18,928