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Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 202,290 | $ 222,190 | $ 608,490 | $ 671,220
Operating profit (loss) | 17,790 | 21,560 | 52,900 | 63,790
Packaging [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 90,330 | 87,930 | 258,550 | 256,470
Operating profit (loss) | 20,090 | 21,870 | 59,340 | 60,090
Aerospace [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 47,430 | 45,380 | 132,020 | 134,340
Operating profit (loss) | 6,660 | 7,110 | 13,670 | 22,410
Energy [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 38,230 | 51,600 | 122,930 | 152,910
Operating profit (loss) | (1,870) | (3,560) | (8,570) | (10,390)
Engineered Components [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 26,300 | 37,280 | 94,990 | 127,500
Operating profit (loss) | 3,180 | 4,380 | 12,620 | 16,570
Corporate, Non-Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating profit (loss) | $ (10,270) | $ (8,240) | $ (24,160) | $ (24,890)

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