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Commitments and Contingencies (Details) (USD $) | 1 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2012 | Jun. 30, 2012 vessel
Notes payable to bank |  |
Contingencies |  |
Letters of credit outstanding related to supply agreements |  | $ 30,469,000
Letters of credit for outstanding Industrial Development Revenue Bonds |  | 26,385,000
Letters of credit related to insurance coverages |  | 21,765,000
Committed bank line |  |
Contingencies |  |
Letters of credit outstanding |  | 78,850,000
Uncommitted bank lines |  |
Contingencies |  |
Letters of credit outstanding |  | 8,690,000
Commodity Trading and Milling |  |
Contingencies |  |
Number of dry bulk vessels to be built |  | 4
Cost of dry bulk vessels to be built |  | 83,000,000
Amount paid under the down payment | 8,300,000 |
Debt guarantees of non-consolidated affiliates and third party |  |
Contingencies |  |
Number of third parties to whom guarantees are outstanding |  | 3
Maximum exposure for guarantees outstanding |  | $ 1,131,000

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- Definition The total amount by which the borrowing capacity was reduced under letters of credit outstanding as of the reporting date for outstanding Industrial Development Revenue Bonds (IDRB's). + References No definition available. + Details
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- Definition The total amount by which the borrowing capacity was reduced under letters of credit outstanding as of the reporting date related to supply agreements. + References No definition available. + Details
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- Definition The total amount by which the borrowing capacity was reduced under letters of credit outstanding as of the reporting date related to insurance coverages. + References No definition available. + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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