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Segment Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Segment Reporting Information [Line Items] |  |  |
Operating Profit (Loss) | $ (44,000) | $ (4,250) | $ 86,650
Capital Expenditures | 31,330 | 28,660 | 23,000
Assets | 1,051,650 | 1,170,300 | 1,625,430
Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 794,020 | 863,980 | 887,300
Operating Profit (Loss) | (44,000) | (4,250) | 86,650
Capital Expenditures | 31,330 | 28,660 | 23,000
Depreciation and Amortization | 44,860 | 43,540 | 37,440
Assets | 1,051,650 | 1,170,300 | 1,292,170
Discontinued Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 0 | 0 | 333,260
Packaging [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 341,340 | 334,270 | 337,710
Operating Profit (Loss) | 77,840 | 78,470 | 77,850
Capital Expenditures | 19,880 | 13,670 | 13,730
Depreciation and Amortization | 22,120 | 20,920 | 20,410
Assets | 423,460 | 418,810 | 436,690
Aerospace [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 174,920 | 176,480 | 121,510
Operating Profit (Loss) | (90,810) | 28,320 | 17,830
Capital Expenditures | 3,950 | 5,010 | 4,430
Depreciation and Amortization | 14,090 | 13,290 | 7,630
Assets | 409,040 | 517,820 | 525,340
Energy [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 158,990 | 193,390 | 206,720
Operating Profit (Loss) | (13,840) | (97,160) | (6,660)
Capital Expenditures | 2,800 | 7,610 | 2,690
Depreciation and Amortization | 4,280 | 4,790 | 4,600
Assets | 100,590 | 128,170 | 210,420
Engineered Components [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 118,770 | 159,840 | 221,360
Operating Profit (Loss) | 15,300 | 18,240 | 34,080
Capital Expenditures | 4,670 | 2,320 | 1,690
Depreciation and Amortization | 4,090 | 4,200 | 4,460
Assets | 78,570 | 88,320 | 100,560
Corporate [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Profit (Loss) | (32,490) | (32,120) | (36,450)
Capital Expenditures | 30 | 50 | 460
Depreciation and Amortization | 280 | 340 | 340
Assets | $ 39,990 | $ 17,180 | $ 19,160

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