Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2022

Property Plant And Equipment [Abstract]

Schedule of Property, Plant and Equipment

	June 30, 2022			December 31, 2021
(Dollars in thousands)
Land and buildings	$	126,583		$	129,826
Machinery and equipment		865,237			861,097
Leasehold improvements and others		9,228			9,831
Construction in progress		69,978			67,529
		1,071,026			1,068,283
Accumulated depreciation		(599,200	)		(573,882	)
Property, plant and equipment, net	$	471,826		$	494,401