Property, Plant, and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Summary of Property, plant and equipment
Property, plant, and equipment — net	$ 408,975	$ 309,686	$ 232,276
Land
Summary of Property, plant and equipment
Property, plant, and equipment	26,627	5,686
Buildings
Summary of Property, plant and equipment
Property, plant, and equipment	173,907	165,144
Machinery and equipment
Summary of Property, plant and equipment
Property, plant, and equipment	687,502	645,195
Software
Summary of Property, plant and equipment
Property, plant, and equipment	45,445	43,652
Construction in progress
Summary of Property, plant and equipment
Property, plant, and equipment	130,838	69,297
Land Building Machinery and Equipment
Summary of Property, plant and equipment
Less allowances for depreciation, depletion, and amortization	(690,166)	(662,724)
Property, plant, and equipment — net	374,153	266,250
Capital leases
Summary of Property, plant and equipment
Property, plant, and equipment	32,865	34,301
Less allowances for depreciation, depletion, and amortization	(6,193)	(4,914)
Property, plant, and equipment — net	26,672	29,387
Mineral resources
Summary of Property, plant and equipment
Property, plant, and equipment	4,980	4,979
Mine development
Summary of Property, plant and equipment
Property, plant, and equipment	30,059	30,058
Productive land
Summary of Property, plant and equipment
Less allowances for depreciation, depletion, and amortization	(26,889)	(20,988)
Property, plant, and equipment — net	$ 8,150	$ 14,049