Investments, At Equity, And Advances To 50% Or Less Owned Companies	6 Months Ended
Jun. 30, 2012
Equity Method Investment, Summarized Financial Information [Abstract]
Investments, At Equity, And Advances To 50% Or Less Owned Companies	INVESTMENTS, AT EQUITY, AND ADVANCES TO 50% OR LESS OWNED COMPANIES MexMar. As of June 30, 2012, the Company had $31.8 million outstanding in short-term notes, inclusive of unpaid accrued interest, with Mantenimiento Express Maritimo, S.A.P.I. de C.V. ("MexMar"), an Offshore Marine Services Mexican joint venture that operates ten offshore support vessels. During the six months ended June 30, 2012, MexMar purchased two offshore support vessels from the Company and financed a portion of the vessels' mobilization costs with the Company totaling $50.0 million ($5.0 million in cash and two short-term notes totaling $45.0 million). During the six months ended June 30, 2012, MexMar made repayments of $14.1 million on these notes, inclusive of accrued interest. Trailer Bridge. Trailer Bridge, Inc. (“Trailer Bridge”), an operator of U.S.-flag deck and RORO barges, offers marine transportation services between Jacksonville, Florida, San Juan, Puerto Rico and Puerto Plata, Dominican Republic. Trailer Bridge filed for bankruptcy under chapter 11 of the U.S. Bankruptcy Code in the United States Bankruptcy Court for the Middle District of Florida (the “Bankruptcy Court”) on November 16, 2011. On April 2, 2012, Trailer Bridge approved and adopted a restructuring plan, which was confirmed by the Bankruptcy Court. Immediately prior to adopting the restructuring plan, the Company had outstanding marketable security positions in 9.25% Senior Secured Notes due from Trailer Bridge (“Old Notes”) and U.S. Government Guaranteed Ship Financing Bonds due from Trailer Bridge (“MARAD Bonds”). Upon the adoption and implementation of Trailer Bridge's restructuring plan, the Company exchanged its Old Notes for a new $33.1 million Secured Note due from Trailer Bridge and new common shares in Trailer Bridge, representing a 47.3% ownership interest valued at $9.9 million. As a result of the adoption and implementation of the restructuring plan, the Company reclassified $48.1 million from marketable securities to investments, at equity, and advances to 50% or less owned companies, representing its investment in the new Trailer Bridge securities valued at $43.0 million and the MARAD Bonds valued at $5.1 million. In addition, as part of the restructuring plan, the Company provided bridge financing of $15.7 million to Trailer Bridge. During the six months ended June 30, 2012, the Company recognized $9.8 million of marketable security gains, net related to its investments in Trailer Bridge. Illinois Corn Processing. In January 2012, the Company and its partner each made a capital contribution of $0.5 million. On February 1, 2012, the Company obtained a 70% controlling interest in ICP through its acquisition of a portion of its partner’s interest for $9.1 million in cash (see Note 4). Upon the acquisition, the Company adjusted its investment in ICP to fair value resulting in the recognition of a gain of $6.0 million, net of tax, which is included in equity in earnings in 50% or less owned companies in the accompanying condensed consolidated statements of income. During the month ended January 31, 2012, the Company made net advances of $0.3 million under its revolving line of credit. Aeroleo. On March 1, 2012, the Company recorded an impairment charge of $5.9 million, net of tax, on its investment in and advances to Aeroleo. The impairment charge resulted from difficulties experienced by Aeroleo following one of its customer's cancellation of certain contracts for a number of AW139 aircraft under contract-lease from Aviation Services. Hawker Pacific. The Company's Hawker Pacific joint venture is an aviation sales and support organization and a distributor of aviation components. During the six months ended June 30, 2012, the Company advanced $3.3 million to Hawker Pacific. The advance bears interest at 10.0% per annum and matures on December 31, 2012, or earlier if a qualified refinancing occurs. As of June 30, 2012, the Company had an outstanding loan totaling $3.3 million inclusive of accrued interest. Avion Pacific Limited. Avion Pacific Limited (“Avion”) is a joint venture that distributes aircraft and aircraft-related parts in Asia. During the six months ended June 30, 2012, the Company made advances of $9.0 million to Avion and received repayments of $13.7 million. As of June 30, 2012, the Company had outstanding loans to Avion totaling $5.0 million inclusive of accrued interest. SCFCo Holdings. SCFCo Holdings LLC (“SCFCo”) was established to operate towboats and dry cargo barges on the Parana-Paraguay Rivers and a terminal facility at Port Ibicuy, Argentina. At various times, SCFCo has agreed to expand its operations through additional capital contributions and bank financing. During the six months ended June 30, 2012, the Company and its partner each contributed additional capital of $0.5 million. Guarantees. The Company has guaranteed the payment of amounts owed by one of its joint ventures under a vessel charter and has guaranteed amounts owed under banking facilities by certain of its joint ventures. As of June 30, 2012, the total amount guaranteed by the Company under these arrangements was $24.6 million. In addition, as of June 30, 2012, the Company had uncalled capital commitments to two of its joint ventures for a total of $2.4 million.

INVESTMENTS, AT EQUITY, AND ADVANCES TO 50% OR LESS OWNED COMPANIES

MexMar. As of June 30, 2012, the Company had $31.8 million outstanding in short-term notes, inclusive of unpaid accrued interest, with Mantenimiento Express Maritimo, S.A.P.I. de C.V. ("MexMar"), an Offshore Marine Services Mexican joint venture that operates ten offshore support vessels. During the six months ended June 30, 2012, MexMar purchased two offshore support vessels from the Company and financed a portion of the vessels' mobilization costs with the Company totaling $50.0 million ($5.0 million in cash and two short-term notes totaling $45.0 million). During the six months ended June 30, 2012, MexMar made repayments of $14.1 million on these notes, inclusive of accrued interest.

Trailer Bridge. Trailer Bridge, Inc. (“Trailer Bridge”), an operator of U.S.-flag deck and RORO barges, offers marine transportation services between Jacksonville, Florida, San Juan, Puerto Rico and Puerto Plata, Dominican Republic. Trailer Bridge filed for bankruptcy under chapter 11 of the U.S. Bankruptcy Code in the United States Bankruptcy Court for the Middle District of Florida (the “Bankruptcy Court”) on November 16, 2011. On April 2, 2012, Trailer Bridge approved and adopted a restructuring plan, which was confirmed by the Bankruptcy Court. Immediately prior to adopting the restructuring plan, the Company had outstanding marketable security positions in 9.25% Senior Secured Notes due from Trailer Bridge (“Old Notes”) and U.S. Government Guaranteed Ship Financing Bonds due from Trailer Bridge (“MARAD Bonds”). Upon the adoption and implementation of Trailer Bridge's restructuring plan, the Company exchanged its Old Notes for a new $33.1 million Secured Note due from Trailer Bridge and new common shares in Trailer Bridge, representing a 47.3% ownership interest valued at $9.9 million. As a result of the adoption and implementation of the restructuring plan, the Company reclassified $48.1 million from marketable securities to investments, at equity, and advances to 50% or less owned companies, representing its investment in the new Trailer Bridge securities valued at $43.0 million and the MARAD Bonds valued at $5.1 million. In addition, as part of the restructuring plan, the Company provided bridge financing of $15.7 million to Trailer Bridge. During the six months ended June 30, 2012, the Company recognized $9.8 million of marketable security gains, net related to its investments in Trailer Bridge.

Illinois Corn Processing. In January 2012, the Company and its partner each made a capital contribution of $0.5 million. On February 1, 2012, the Company obtained a 70% controlling interest in ICP through its acquisition of a portion of its partner’s interest for $9.1 million in cash (see Note 4). Upon the acquisition, the Company adjusted its investment in ICP to fair value resulting in the recognition of a gain of $6.0 million, net of tax, which is included in equity in earnings in 50% or less owned companies in the accompanying condensed consolidated statements of income. During the month ended January 31, 2012, the Company made net advances of $0.3 million under its revolving line of credit.

Aeroleo. On March 1, 2012, the Company recorded an impairment charge of $5.9 million, net of tax, on its investment in and advances to Aeroleo. The impairment charge resulted from difficulties experienced by Aeroleo following one of its customer's cancellation of certain contracts for a number of AW139 aircraft under contract-lease from Aviation Services.

Hawker Pacific. The Company's Hawker Pacific joint venture is an aviation sales and support organization and a distributor of aviation components. During the six months ended June 30, 2012, the Company advanced $3.3 million to Hawker Pacific. The advance bears interest at 10.0% per annum and matures on December 31, 2012, or earlier if a qualified refinancing occurs. As of June 30, 2012, the Company had an outstanding loan totaling $3.3 million inclusive of accrued interest.

Avion Pacific Limited. Avion Pacific Limited (“Avion”) is a joint venture that distributes aircraft and aircraft-related parts in Asia. During the six months ended June 30, 2012, the Company made advances of $9.0 million to Avion and received repayments of $13.7 million. As of June 30, 2012, the Company had outstanding loans to Avion totaling $5.0 million inclusive of accrued interest.

SCFCo Holdings. SCFCo Holdings LLC (“SCFCo”) was established to operate towboats and dry cargo barges on the Parana-Paraguay Rivers and a terminal facility at Port Ibicuy, Argentina. At various times, SCFCo has agreed to expand its operations through additional capital contributions and bank financing. During the six months ended June 30, 2012, the Company and its partner each contributed additional capital of $0.5 million.

Guarantees. The Company has guaranteed the payment of amounts owed by one of its joint ventures under a vessel charter and has guaranteed amounts owed under banking facilities by certain of its joint ventures. As of June 30, 2012, the total amount guaranteed by the Company under these arrangements was $24.6 million. In addition, as of June 30, 2012, the Company had uncalled capital commitments to two of its joint ventures for a total of $2.4 million.