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Segment and Geographic Information - Income Before Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Net corporate interest expense | $ (6,559) | $ (7,923) | $ (10,774)
Goodwill and intangible asset impairments | 0 | (17,674) | (17,484)
Arbitration and claim settlements | 0 | 0 | (12,552)
Restructuring and other costs, net | 0 | (9,760) |
(Loss) Income Before Income Taxes | 43,864 | 39,088 | 23,637
Segment Reconciling Items |  |  |
Segment Reporting Information [Line Items] |  |  |
Segment operating earnings | 76,891 | 89,261 | 85,308
Unallocated corporate and shared costs and credits | (14,386) | (17,431) | (7,699)
Net corporate interest expense | (6,559) | (7,923) | (10,774)
Stock option expense | (1,053) | (1,122) | (1,885)
Amortization of acquisition-related intangible assets | (11,029) | (11,653) | (11,277)
Goodwill and intangible asset impairments | 0 | (17,674) | (17,484)
Arbitration and claim settlements |  | 0 | (12,552)
Restructuring and other costs, net | 0 | 8,133 |
Gain (loss) on disposition of businesses, net | 0 | 13,763 | (0)
(Loss) Income Before Income Taxes | $ 43,864 | $ 39,088 | $ 23,637

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