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Summary of Significant Accounting Policies (Details 3) (USD $) | 12 Months Ended |  |  |  |  |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Minimum | Dec. 31, 2013 Maximum | Dec. 31, 2013 Options | Dec. 31, 2012 Options | Dec. 31, 2011 Options | Dec. 31, 2013 Options Minimum | Dec. 31, 2011 Options Minimum | Dec. 31, 2013 Options Maximum | Dec. 31, 2011 Options Maximum | Dec. 31, 2013 Selling, general, and administrative expenses | Dec. 31, 2012 Selling, general, and administrative expenses | Dec. 31, 2011 Selling, general, and administrative expenses | Dec. 31, 2013 Component Products Segment | Dec. 31, 2011 Component Products Segment | Dec. 31, 2010 Component Products Segment | Dec. 31, 2010 Molded Fiber reporting units | Dec. 31, 2013 Packaging Segment | Dec. 31, 2012 Packaging Segment | Dec. 31, 2011 Packaging Segment
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of excess of fair value over carrying value of the reporting unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 37,000,000 | $ 7,000,000 |  |  |
Percentage of excess of fair value over carrying value of the reporting unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 161.00% | 190.00% |  |  |
Changes in the carrying amounts of goodwill (by segment) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the period | 7,039,000 | 6,481,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,021,000 | 4,463,000 |  |  | 2,018,000 | 2,018,000 | 2,018,000
PAC Acquisition - refinement of estimates in the initial purchase price allocation (see Note 18) | 283,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 283,000 |  |  |  |  |  |
Balance at the end of the period | 7,322,000 | 7,039,000 | 6,481,000 |  |  |  |  |  |  |  |  |  |  |  |  | 5,304,000 | 4,463,000 |  |  | 2,018,000 | 2,018,000 | 2,018,000
Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives of intangible assets with a definite life |  |  |  | 5 years | 14 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total share-based compensation expense |  |  |  |  |  | 214,000 | 133,000 | 141,000 |  |  |  |  | 924,000 | 860,000 | 1,089,000 |  |  |  |  |  |  |
Assumptions used to determine the intrinsic fair market value of the options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility (as a percent) |  |  |  |  |  |  | 56.90% |  | 34.00% | 54.80% | 50.00% | 73.30% |  |  |  |  |  |  |  |  |  |
Expected dividends (as a percent) |  |  |  |  |  | 0.00% | 0.00% | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk free interest rate (as a percent) |  |  |  |  |  |  | 0.39% |  | 0.40% | 0.90% | 0.70% | 2.90% |  |  |  |  |  |  |  |  |  |
Expected term |  |  |  |  |  |  | 5 years |  | 3 years 3 months 18 days | 4 years 7 months 6 days | 5 years | 7 years 8 months 12 days |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of options granted (in dollars per share) |  |  |  |  |  | $ 5.84 | $ 7.72 | $ 5.75 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total income tax benefit recognized |  |  |  |  |  | 280,000 | 270,000 | 359,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research and Development |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research and development expense | $ 1,200,000 | $ 1,300,000 | $ 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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