Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Major Classes of Property, Plant and Equipment at Cost

The major classes of property, plant and equipment, at cost, at December 31, 2020 and 2019 were as follows: 

	2020		2019
Land, buildings and leasehold improvements	$	272,637	$	248,067
Machinery and equipment	496,664		443,612
Computer equipment and software	172,913		158,574
Construction in progress	84,336		63,991
	1,026,550		914,244
Less: Accumulated depreciation	(552,638)		(483,525)
Property, plant and equipment, net	$	473,912	$	430,719