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Investments in and Advances to Affiliates and Notes Receivable from Affiliate (Details) (USD $) |  |  | 12 Months Ended | 36 Months Ended |  | 1 Months Ended |  |  |  |  |  | 12 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  | 0 Months Ended | 1 Months Ended |  |  |  |  | 3 Months Ended |  |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Commodity Trading and Milling | Dec. 31, 2011 Commodity Trading and Milling | Dec. 31, 2010 Commodity Trading and Milling | Dec. 31, 2012 Sugar | Dec. 31, 2011 Sugar | Dec. 31, 2010 Sugar | Dec. 31, 2012 Turkey | Dec. 31, 2011 Turkey | Dec. 31, 2010 Turkey | Dec. 31, 2012 Democratic Republic of Congo | Dec. 31, 2011 Democratic Republic of Congo | Dec. 31, 2010 Democratic Republic of Congo | Dec. 31, 2012 Democratic Republic of Congo | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Democratic Republic of Congo | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Lesotho | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Kenya Minimum | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Kenya Maximum | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Nigeria Minimum | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Nigeria Maximum | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Zambia | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Colombia | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Ecuador Minimum | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Ecuador Maximum | Dec. 31, 2012 Businesses conducting flour, maize and feed milling and poultry production and processing Haiti | Oct. 30, 2010 Poultry business | Jul. 02, 2011 Poultry business | Dec. 31, 2010 Bakery business Democratic Republic of Congo | Dec. 31, 2012 Grain and commodity trading businesses Australia | Oct. 30, 2010 Grain and commodity trading businesses Australia | Dec. 31, 2012 Grain and commodity trading businesses Peru | Dec. 31, 2012 PS International item | Dec. 30, 2012 PS International North Carolina | Jan. 02, 2012 PS International North Carolina | Jan. 28, 2012 PS International North Carolina | Apr. 03, 2010 PS International North Carolina | Dec. 31, 2010 PS International North Carolina | Jul. 02, 2011 PS International North Carolina | Dec. 31, 2012 PS International North Carolina | Dec. 31, 2011 PS International North Carolina Line-of-credit | Dec. 31, 2012 Sugar related businesses Argentina business | Dec. 31, 2012 Sugar related businesses Argentina Minimum | Dec. 31, 2012 Sugar related businesses Argentina Maximum | Dec. 31, 2010 Butterball, LLC | Oct. 01, 2011 Butterball, LLC | Dec. 31, 2012 Butterball, LLC | Dec. 31, 2010 Butterball, LLC | Dec. 06, 2010 Butterball, LLC | Dec. 06, 2010 Butterball, LLC Subordinated loan | Dec. 31, 2010 Butterball, LLC Subordinated loan | Dec. 31, 2012 Butterball, LLC Subordinated loan | Dec. 31, 2011 Butterball, LLC Subordinated loan | Dec. 31, 2012 Butterball, LLC Detachable warrants | Dec. 06, 2010 Butterball, LLC Detachable warrants | Oct. 01, 2011 Butterball, LLC Term loan | Dec. 31, 2012 Butterball, LLC Term loan | Dec. 31, 2011 Butterball, LLC Term loan
Investments in and Advances to Affiliates and Notes Receivable from Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage ownership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% | 35.00% | 49.00% | 25.00% | 48.00% | 49.00% | 40.00% | 25.00% | 50.00% | 23.00% | 50.00% | 49.00% |  | 25.00% |  | 50.00% |  |  |  |  |  |  |  |  |  |  | 46.00% | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of businesses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,988,000 |  |  |  | $ 5,000,000 |  |  |  |  |  | $ 7,650,000 |  |  |  |  |  |  |  |  |  |  |  | $ 177,500,000 |  |  |  |  |  |  |  |  |
Percentage ownership acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  | 25.00% |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Percentage of interest held by Murphy Brown, LLC reacquired by Maxwell Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 49.00% |  |  |  |  |  |  |  |  |
Percentage of ownership interest continued to be owned by the Maxwell Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Investee's intangible assets for trade name |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 111,000,000 |  |  |  |  |  |  |  |  |  |  |
Investee's intangible assets for goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,265,000 |  |  |  |  |  |  |  |  |  |  |
Loan provided to affiliate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 81,231,000 |  |  |  | 100,000,000 |  |  |  |  | 13,037,000 |  |
Maturity period of unsecured subordinated loan provided |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |
Interest rate on loan provided (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |  |  | 12.00% |
Percentage of interest payable in cash |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |
Percentage of pay-in-kind interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |
Additional equity interest that can be acquired upon exercise of warrants (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |
Economic interest (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 52.50% |  |  |  |
Description of variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | prime rate |  |  |  |  |  |  |  |  |  |  |
Interest rate margin (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |
Investments in and advances to affiliates | 410,542,000 | 364,840,000 | 186,873,000 | 160,402,000 |  | 2,775,000 | 3,177,000 |  | 220,894,000 | 201,261,000 |  | 82,257,000 |  |  | 82,257,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,586,000 |  |  |
Notes receivable from affiliate | 202,931,000 | 110,903,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 81,231,000 |  |  | 89,414,000 |  | 112,629,000 | 100,693,000 |  |  |  | 9,071,000 | 10,210,000
Cash fee received as consideration for unsecured subordinated loan provided |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |
Cash syndication fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,525,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of net syndication fee initially recognized as income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 47.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization period of remaining net syndication fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Additional investment or capital contribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,598,000 |  |  |  |  |  |  |  |  |  |  |  |
Investment in equity and long-term advances |  |  |  |  |  |  |  |  |  |  |  | 24,814,000 | 11,397,000 | 10,080,000 | 46,291,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,000,000 | 990,000 | 660,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capacity provided by Seaboard |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receivable from affiliate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,096,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership after increase (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 70.00% |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of transactions for acquiring interest in subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment to increase ownership interest in affiliate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,045,000 | 3,186,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Excess of carrying value of investment in affiliates over entity's share of affiliates' book value |  |  | 8,995,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined condensed financial information of the non-controlled, non-consolidated affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  | 1,510,101,000 | 1,750,714,000 | 1,117,440,000 | 12,107,000 | 12,880,000 | 20,132,000 | 1,437,376,000 | 1,375,751,000 | 83,409,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  | 24,686,000 | 33,058,000 | 47,594,000 | 194,000 | 950,000 | 2,064,000 | 38,384,000 | 24,250,000 | (1,901,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets |  |  | 862,992,000 | 864,802,000 | 581,755,000 | 8,865,000 | 10,743,000 | 10,248,000 | 871,945,000 | 819,618,000 | 725,464,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total liabilities |  |  | 469,265,000 | 480,328,000 | 250,076,000 | 2,839,000 | 3,851,000 | 3,791,000 | 443,291,000 | 428,361,000 | 360,673,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total equity |  |  | $ 393,727,000 | $ 384,474,000 | $ 331,679,000 | $ 6,026,000 | $ 6,892,000 | $ 6,457,000 | $ 428,654,000 | $ 391,257,000 | $ 364,791,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the percentage of economic ownership in an equity method investee, which is higher than the percentage of voting interest due to warrants held by the entity. + References No definition available. + Details
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- Definition The amount of the equity method investee's intangible assets for goodwill. + References No definition available. + Details
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