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Summary of Significant Accounting Policies (Details 3) (USD $)
 12 Months Ended
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