Property, plant and equipment (Tables)

3 Months Ended

Mar. 31, 2022

Property, plant and equipment

Summary of property, plant and equipment

	March 31,		December 31,
	2022		2021
Land	$	3,969	$	3,969
Land improvements		5,330		5,278
Leasehold improvements		5,423		5,405
Buildings		35,226		34,635
Machinery and equipment		70,026		68,939
Furniture and fixtures		22,587		22,275
Mobile equipment and other		4,724		4,737
Construction-in-process		3,496		4,235
Total property, plant and equipment		150,781		149,473
Less accumulated depreciation		(85,146)		(82,686)
Net property, plant and equipment	$	65,635	$	66,787