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Business Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Dec. 30, 2017
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |  |
Net sales | $ 812,576 | $ 936,262 | $ 2,534,596 | $ 2,709,702 |
Cost of sales and operating expenses | 648,101 | 742,511 | 1,979,201 | 2,129,721 |
Selling, general and administrative expenses | 67,447 | 82,153 | 232,907 | 253,608 |
Restructuring and impairment charges | 0 | 0 | 14,965 | 0 |
Depreciation and amortization | 78,842 | 77,202 | 235,915 | 221,306 |
Operating income | 18,186 | 34,396 | 71,608 | 105,067 |
Equity in net income/(loss) of unconsolidated subsidiaries | (2,792) | 7,703 | 109,598 | 16,669 |
Total other expense | (21,934) | (27,119) | (113,414) | (79,470) |
Income/(loss) before income taxes | (6,540) | 14,980 | 67,792 | 42,266 |
Segment Assets | 4,805,211 |  | 4,805,211 |  | $ 4,958,225
Feed Ingredients |  |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |  |
Net sales | 482,744 | 575,543 | 1,467,365 | 1,677,286 |
Cost of sales and operating expenses | 383,846 | 449,574 | 1,123,722 | 1,304,352 |
Gross Margin | 98,898 | 125,969 | 343,643 | 372,934 |
Selling, general and administrative expenses | 39,702 | 44,841 | 131,914 | 132,553 |
Restructuring and impairment charges |  |  | 0 |  |
Depreciation and amortization | 47,321 | 46,860 | 140,933 | 134,933 |
Operating income | 11,875 | 34,268 | 70,796 | 105,448 |
Equity in net income/(loss) of unconsolidated subsidiaries | (162) | 523 | (57) | 763 |
Segment income/(loss) | 11,713 | 34,791 | 70,739 | 106,211 |
Segment Assets | 2,517,315 |  | 2,517,315 |  | 2,614,545
Food Ingredients |  |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |  |
Net sales | 265,208 | 298,863 | 847,457 | 843,498 |
Cost of sales and operating expenses | 210,697 | 238,694 | 684,718 | 670,448 |
Gross Margin | 54,511 | 60,169 | 162,739 | 173,050 |
Selling, general and administrative expenses | 21,843 | 25,556 | 67,894 | 77,236 |
Restructuring and impairment charges |  |  | 14,965 |  |
Depreciation and amortization | 19,697 | 19,506 | 60,725 | 55,291 |
Operating income | 12,971 | 15,107 | 19,155 | 40,523 |
Equity in net income/(loss) of unconsolidated subsidiaries | 0 | 0 | 0 | 0 |
Segment income/(loss) | 12,971 | 15,107 | 19,155 | 40,523 |
Segment Assets | 1,378,880 |  | 1,378,880 |  | 1,499,027
Fuel Ingredients |  |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |  |
Net sales | 64,624 | 61,856 | 219,774 | 188,918 |
Cost of sales and operating expenses | 53,558 | 54,243 | 170,761 | 154,921 |
Gross Margin | 11,066 | 7,613 | 49,013 | 33,997 |
Selling, general and administrative expenses | (2,822) | (488) | (4,056) | 5,648 |
Restructuring and impairment charges |  |  | 0 |  |
Depreciation and amortization | 9,370 | 7,912 | 26,378 | 22,472 |
Operating income | 4,518 | 189 | 26,691 | 5,877 |
Equity in net income/(loss) of unconsolidated subsidiaries | (2,630) | 7,180 | 109,655 | 15,906 |
Segment income/(loss) | 1,888 | 7,369 | 136,346 | 21,783 |
Segment Assets | 762,652 |  | 762,652 |  | 688,890
Corporate |  |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |  |
Net sales | 0 | 0 | 0 | 0 |
Cost of sales and operating expenses | 0 | 0 | 0 | 0 |
Gross Margin | 0 | 0 | 0 | 0 |
Selling, general and administrative expenses | 8,724 | 12,244 | 37,155 | 38,171 |
Restructuring and impairment charges |  |  | 0 |  |
Depreciation and amortization | 2,454 | 2,924 | 7,879 | 8,610 |
Operating income | (11,178) | (15,168) | (45,034) | (46,781) |
Equity in net income/(loss) of unconsolidated subsidiaries | 0 | 0 | 0 | 0 |
Segment income/(loss) | (11,178) | (15,168) | (45,034) | (46,781) |
Segment Assets | 146,364 |  | 146,364 |  | 155,763
Total |  |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |  |
Net sales | 812,576 | 936,262 | 2,534,596 | 2,709,702 |
Cost of sales and operating expenses | 648,101 | 742,511 | 1,979,201 | 2,129,721 |
Gross Margin | 164,475 | 193,751 | 555,395 | 579,981 |
Selling, general and administrative expenses | 67,447 | 82,153 | 232,907 | 253,608 |
Restructuring and impairment charges |  |  | 14,965 |  |
Depreciation and amortization | 78,842 | 77,202 | 235,915 | 221,306 |
Operating income | 18,186 | 34,396 | 71,608 | 105,067 |
Equity in net income/(loss) of unconsolidated subsidiaries | (2,792) | 7,703 | 109,598 | 16,669 |
Segment income/(loss) | 15,394 | $ 42,099 | 181,206 | $ 121,736 |
Segment Assets | $ 4,805,211 |  | $ 4,805,211 |  | $ 4,958,225

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