v2.4.0.6

Description Of Business And Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 years | Dec. 31, 2010 | Dec. 31, 2009
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Undistributed earnings included in retained earnings | $ 14,031 |  |
Capitalized interest | 693 | 22 | 123
Goodwill | 29,990 | 29,990 |
Maturity | 2016 |  |
Amortization period, minimum (in years) | 3 |  |
Amortization period, maximum (in years) | 6 |  |
Other assets amortization period, minimum (in years) | 2 |  |
Other assets amortization period, maximum (in years) | 20 |  |
Exchange receivable (payable), net | 14,557 | 950 |
Removal And Disposal Of Hazardous Materials [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Asset retirement obligation recorded | $ 0 |  |
PVC Joint Venture In China [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Ownership interest | 59.00% |  |
Natural Gas Pipeline Joint Venture [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Ownership interest | 50.00% |  |
6 1/2% Senior Notes Due 2035 [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Stated interest rate | 6.50% |  |
Maturity | 2035 |  |
GO Zone 6 3/4% Senior Notes Due 2032 [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Stated interest rate | 6.75% | 6.75% |
Maturity | 2032 |  |

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