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Segment and Geographic Area Information Depreciation and Amortization and Capital Expenditures by Reportable Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | $ 231,984 | $ 213,484 | $ 200,698
Capital expenditures | 850,477 | 851,796 | 699,991
Reportable Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 213,149 | 197,179 | 185,931
Reportable Segments | Lithium |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 112,854 | 99,424 | 95,193
Capital expenditures | 720,563 | 665,585 | 500,849
Reportable Segments | Bromine Specialties |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 50,310 | 47,611 | 41,607
Capital expenditures | 57,486 | 82,208 | 79,357
Reportable Segments | Catalysts |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 49,985 | 50,144 | 49,131
Capital expenditures | 44,448 | 57,939 | 52,019
All Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 8,498 | 8,440 | 8,073
Capital expenditures | 6,792 | 7,309 | 5,232
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 10,337 | 7,865 | 6,694
Capital expenditures | $ 21,188 | $ 38,755 | $ 62,534

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