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Business Segments (Significant Reconciling Items) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income (loss) from Operations: |  |  |
Profit (loss) for reportable segments | $ 27,685 | $ (134,165) | $ (41,349)
Interest expense | (8,377) | (6,551) | (4,378)
Interest income | 307 | 228 | 206
Other income | 367 | 1,523 | 5,585
LIFO (expense) income | (2,009) | 2,643 | 2,468
Equity in income (loss) of nonconsolidated investments | 6 | (1,290) | (413)
Corporate expense, cost of capital elimination, and other unallocated charges | (9,937) | (9,557) | (12,696)
Income (loss) before income taxes | 8,042 | (147,169) | (50,577)
Assets: |  |  |
Segment Assets | 396,556 | 393,023 | 566,660
Depreciation/Amortization | 19,841 | 23,492 | 26,674
Expenditures for Long-Lived Assets | 6,149 | 7,664 | 15,201
Operating Segments |  |  |
Income (loss) from Operations: |  |  |
Profit (loss) for reportable segments | 27,685 | (134,165) | (41,349)
Assets: |  |  |
Segment Assets | 375,898 | 355,129 | 544,272
Depreciation/Amortization | 18,369 | 22,176 | 25,675
Expenditures for Long-Lived Assets | 5,587 | 5,353 | 9,836
Corporate |  |  |
Assets: |  |  |
Segment Assets | 25,845 | 41,072 | 28,209
Depreciation/Amortization | 1,472 | 1,316 | 999
Expenditures for Long-Lived Assets | 562 | 2,311 | 5,077
Reconciling Items |  |  |
Assets: |  |  |
Segment Assets | (5,187) | (3,178) | (5,821)
Expenditures for Long-Lived Assets | $ 0 | $ 0 | $ 288

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