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Business Segments and Geographic Information (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Pre-Tax Income Reconciliation of Segments |  |  |  |
Total operating income from segments | $ 53,281 | $ 60,889 | $ 105,952 | $ 109,459
Unallocated Amount: |  |  |  |
General and Administrative Expenses | (32,174) | (28,148) | (64,022) | (56,650)
Income before income taxes and equity in earnings of affiliates | 29,498 | 41,111 | 59,596 | 69,761
Operating Segments |  |  |  |
Pre-Tax Income Reconciliation of Segments |  |  |  |
Total operating income from segments | 85,455 | 89,037 | 169,974 | 166,109
Segment Reconciling Items |  |  |  |
Unallocated Amount: |  |  |  |
General and Administrative Expenses | (32,174) | (28,148) | (64,022) | (56,650)
Net Interest Expense | $ (23,783) | $ (19,778) | $ (46,356) | $ (39,698)

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