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Business Segments (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Business Segments [Abstract] |  |  |  |
Income for reportable segments | $ 11,929 | $ 12,933 | $ 21,187 | $ 20,051
Interest expense | (1,288) | (126) | (1,901) | (249)
Interest income | 37 | 147 | 94 | 291
Other income | (95) | 138 | 708 | 273
LIFO income (expense) | 406 | 202 | 400 | 198
Equity in (loss) income of nonconsolidated investment | (186) | 142 | (13) | 346
Corporate expense, cost of capital elimination and other unallocated charges | (2,980) | (3,206) | (5,985) | (5,359)
Income before income taxes | $ 7,823 | $ 10,230 | $ 14,490 | $ 15,551

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