Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2023

Property Plant And Equipment [Abstract]

Schedule of Property, Plant and Equipment

	March 31, 2023			December 31, 2022
(Dollars in thousands)
Land and buildings	$	151,533		$	144,870
Machinery and equipment		923,436			887,222
Leasehold improvements and others		5,165			4,993
Construction in progress		85,014			80,263
		1,165,148			1,117,348
Accumulated depreciation		(681,886	)		(643,388	)
Property, plant and equipment, net	$	483,262		$	473,960