001 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) link:presentationLink link:definitionLink link:calculationLink 002 - Statement - Condensed Consolidated Balance Sheets (Unaudited) link:presentationLink link:definitionLink link:calculationLink 003 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 004 - Statement - Condensed Consolidated Statements Of Cash Flows (Unaudited) link:presentationLink link:definitionLink link:calculationLink 005 - Statement - Condensed Consolidated Statement Of Changes In Stockholders' Equity (Unaudited) link:presentationLink link:definitionLink link:calculationLink 006 - Disclosure - Note 1 - Accounting Policies and Basis of Presentation link:presentationLink link:definitionLink link:calculationLink 007 - Disclosure - Note 2 - Equity Method Investments link:presentationLink link:definitionLink link:calculationLink 008 - Disclosure - Note 3 - Earnings per Share link:presentationLink link:definitionLink link:calculationLink 009 - Disclosure - Note 4 - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 010 - Disclosure - Note 5 - Derivative Instruments link:presentationLink link:definitionLink link:calculationLink 011 - Disclosure - Note 6 - Operating Segments link:presentationLink link:definitionLink link:calculationLink 012 - Disclosure - Note 7 - Employee Benefit Plans link:presentationLink link:definitionLink link:calculationLink 013 - Disclosure - Note 8 - Industrial Revenue Bond link:presentationLink link:definitionLink link:calculationLink 014 - Disclosure - Note 9 - Sale of Bioplastics Manufacturing Business link:presentationLink link:definitionLink link:calculationLink 015 - Disclosure - Note 1 - Accounting Policies and Basis of Presentation (Tables) link:presentationLink link:definitionLink link:calculationLink 016 - Disclosure - Note 2 - Equity Method Investments (Tables) link:presentationLink link:definitionLink link:calculationLink 017 - Disclosure - Note 3 - Earnings per Share (Tables) link:presentationLink link:definitionLink link:calculationLink 018 - Disclosure - Note 5 - Derivative Instruments (Tables) link:presentationLink link:definitionLink link:calculationLink 019 - Disclosure - Note 6 - Operating Segments (Tables) link:presentationLink link:definitionLink link:calculationLink 020 - Disclosure - Note 7 - Employee Benefit Plans (Tables) link:presentationLink link:definitionLink link:calculationLink 021 - Disclosure - Note 8 - Industrial Revenue Bond (Tables) link:presentationLink link:definitionLink link:calculationLink 022 - Disclosure - Note 1 - Accounting Policies and Basis of Presentation (Detail) link:presentationLink link:definitionLink link:calculationLink 023 - Disclosure - Note 1 - Accounting Policies and Basis of Presentation (Detail) - Inventory link:presentationLink link:definitionLink link:calculationLink 024 - Disclosure - Note 2 - Equity Method Investments (Detail) link:presentationLink link:definitionLink link:calculationLink 025 - Disclosure - Note 2 - Equity Method Investments (Detail) - Condensed Financial Information of the Company's Non-Consolidated Equity Method Investment in ICP link:presentationLink link:definitionLink link:calculationLink 026 - Disclosure - Note 2 - Equity Method Investments (Detail) - Condensed Financial Information Balance Sheet of ICP link:presentationLink link:definitionLink link:calculationLink 027 - Disclosure - Note 2 - Equity Method Investments (Detail) - The Company’s Equity in Earnings (Loss) of Joint Ventures link:presentationLink link:definitionLink link:calculationLink 028 - Disclosure - Note 2 - Equity Method Investments (Detail) - The Company's Investment in Joint Ventures link:presentationLink link:definitionLink link:calculationLink 029 - Disclosure - Note 3 - Earnings per Share (Detail) link:presentationLink link:definitionLink link:calculationLink 030 - Disclosure - Note 3 - Earnings per Share (Detail) - The Computations of Basic and Diluted Earnings (Loss) Per Share link:presentationLink link:definitionLink link:calculationLink 031 - Disclosure - Note 4 - Commitments and Contingencies (Detail) link:presentationLink link:definitionLink link:calculationLink 032 - Disclosure - Note 5 - Derivative Instruments (Detail) link:presentationLink link:definitionLink link:calculationLink 033 - Disclosure - Note 5 - Derivative Instruments (Detail) - Commodity Derivatives Not Designated as Hedge Derivatives link:presentationLink link:definitionLink link:calculationLink 034 - Disclosure - Note 5 - Derivative Instruments (Detail) - Derivatives Designated As Cash-Flow Hedges link:presentationLink link:definitionLink link:calculationLink 035 - Disclosure - Note 6 - Operating Segments (Detail) link:presentationLink link:definitionLink link:calculationLink 036 - Disclosure - Note 6 - Operating Segments (Detail) - Operating Profit (Loss) for Each Segment link:presentationLink link:definitionLink link:calculationLink 037 - Disclosure - Note 6 - Operating Segments (Detail) - Identifiable Assets for Each Segment link:presentationLink link:definitionLink link:calculationLink 038 - Disclosure - Note 7 - Employee Benefit Plans (Detail) link:presentationLink link:definitionLink link:calculationLink 039 - Disclosure - Note 7 - Employee Benefit Plans (Detail) - Net Periodic Benefit Cost link:presentationLink link:definitionLink link:calculationLink 040 - Disclosure - Note 7 - Employee Benefit Plans (Detail) - Reserved shares of Common Stock link:presentationLink link:definitionLink link:calculationLink 041 - Disclosure - Note 8 - Industrial Revenue Bond (Detail) link:presentationLink link:definitionLink link:calculationLink 042 - Disclosure - Note 8 - Industrial Revenue Bond (Detail) - Summary of Financial Assets and Liabilities that are Offset link:presentationLink link:definitionLink link:calculationLink 043 - Disclosure - Note 9 - Sale of Bioplastics Manufacturing Business (Detail) link:presentationLink link:definitionLink link:calculationLink 000 - Disclosure - Document And Entity Information link:presentationLink link:definitionLink link:calculationLink