Property, plant and equipment (Tables)

9 Months Ended

Sep. 30, 2021

Property, plant and equipment

Summary of property, plant and equipment

	September 30,		December 31,
	2021		2020
Land	$	3,969	$	2,378
Land improvements		5,278		4,830
Leasehold improvements		4,087		4,087
Buildings		33,732		29,580
Machinery and equipment		67,676		61,154
Furniture and fixtures		20,773		19,782
Mobile equipment and other		4,775		5,200
Construction-in-process		4,738		11,751
Total property, plant and equipment		145,028		138,762
Less accumulated depreciation		(80,416)		(74,442)
Net property, plant and equipment	$	64,612	$	64,320