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Related Party And Affiliate Transactions (Details) (USD $)
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1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Mar. 31, 2000
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Affiliates [Member]
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| Related Party Transaction [Line Items] | ||||
| Incurred and paid lease payments | $ 1,556,000 | $ 1,549,000 | $ 1,469,000 | |
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Suzhou Huasu Plastics Company, Ltd. [Member]
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| Related Party Transaction [Line Items] | ||||
| Loan to affiliates | 2,000,000 | |||
| Ownership interest | 59.00% | |||
| Percentage added to LIBOR for interest rate | 2.00% | |||
| Interest received | 441,000 | 934,000 | 0 | |
| Principal payments received | 1,192,000 | 763,000 | 0 | |
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Previously [Member] | Suzhou Huasu Plastics Company, Ltd. [Member]
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| Related Party Transaction [Line Items] | ||||
| Loan to affiliates | 5,150,000 | |||
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Notes Receivable From Affiliate [Member] | Prepaid Expenses And Other Current Assets [Member] | Suzhou Huasu Plastics Company, Ltd. [Member]
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| Related Party Transaction [Line Items] | ||||
| Due from affiliate, current | 1,192,000 | |||
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Notes Receivable From Affiliate [Member] | Other Assets, Net [Member] | Suzhou Huasu Plastics Company, Ltd. [Member]
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| Related Party Transaction [Line Items] | ||||
| Due from affiliate, noncurrent | $ 2,383,000 | |||