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Investment in Unconsolidated Subsidiary Selected Financial Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2019 | Dec. 31, 2018 | Dec. 30, 2017
Assets: |  |  |
Property, plant and equipment, net | $ 713,489 | $ 576,384 |
Total assets | 1,412,225 | 787,243 |
Liabilities and members' equity: |  |  |
Total current portion of long term debt | 341 | 189 |
Total long term debt | 8,742 | 8,485 |
Total members' equity | 1,322,918 | 737,411 |
Expenses: |  |  |
Operating income | 728,065 | 318,593 | $ 57,441
Interest and debt expense, net | (1,282) | (955) | (2,306)
Diamond Green Diesel Holdings LLC Joint Venture [Member] |  |  |
Assets: |  |  |
Total current assets | 668,026 | 186,258 |
Other assets | 30,710 | 24,601 |
Liabilities and members' equity: |  |  |
Total other current liabilities | 75,802 | 40,619 |
Total other long term liabilities | 4,422 | 539 |
Total liabilities and member's equity | 1,412,225 | 787,243 |
Revenues: |  |  |
Operating revenues | 1,217,504 | 677,663 | 633,908
Equity Method Investment, Summarized Financial Information, Total Costs and Expenses Less Depreciation, Amortization and Accretion Expense | 438,672 | 329,636 | 547,512
Equity Method Investment, Summarized Financial Information, Depreciation, Amortization and Accretion Expense | 50,767 | 29,434 | 28,955
Expenses: |  |  |
Other income | 2,121 | 1,919 | 1,343
Net income | $ 728,904 | $ 319,557 | $ 56,478

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