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Industry Segments (Details 2) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Corporate Overhead Footnote |  |
General and administrative expense | $ 9,929 | $ 8,850
Depreciation and amortization | 114 | 253
Interest expense | 6,052 | 4,997
Other general corporate (income) expense, net | 289 | 463
Total | $ 16,384 | $ 14,563

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