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Business Segments and Geographic Information - Schedule of Pre-Tax Income Reconciliation of Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Pre-Tax Income Reconciliation of Segments |  |  |  |
Operating income from segments | $ 127,104 | $ 110,360 | $ 241,213 | $ 220,304
Unallocated amounts: |  |  |  |
General and Administrative Expenses | (54,688) | (45,543) | (103,167) | (99,325)
Net interest expense | (26,068) | (25,362) | (51,710) | (54,104)
Gain on extinguishment of debt | 1,654 | 0 | 4,693 | 1,563
Gain (loss) on dispositions of real estate | (2,950) | (1,304) | 10,379 | (880)
Income before income taxes and equity in earnings of affiliates | $ 45,052 | $ 38,151 | $ 101,408 | $ 67,558

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