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Income Taxes (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current [Abstract]      
Domestic $ 17,791,000 $ 10,887,000 $ (7,000)
Foreign 1,362,000 1,108,000 1,528,000
Total current 19,153,000 11,995,000 1,521,000
Deferred [Abstract]      
Domestic 5,909,000 (11,886,000) 13,873,000
Foreign (84,000) 12,000 (3,000)
Total deferred 5,825,000 (11,874,000) 13,870,000
Total income tax provision 24,978,000 121,000 15,391,000
Cumulative undistributed earnings of foreign subsidiaries 27,600,000 19,900,000 24,700,000
Earnings before income taxes of foreign operations 4,400,000 4,300,000 4,000,000
Reconciliations between taxes at the U.S. Federal income tax rate and taxes at our effective income tax rate on earnings [Abstract]      
U.S. Federal income tax rate of 35% 23,781,000 22,557,000 14,032,000
State and local income taxes, net of federal income tax benefit 2,021,000 2,261,000 2,050,000
Income tax (tax benefits) attributable to foreign income (852,000) (163,000) 107,000
Change in unrecognized tax benefits 0 (454,000) (1,084,000)
Other non-deductible items, net 697,000 (2,455,000) 639,000
Change in valuation allowance (669,000) (21,625,000) (353,000)
Total income tax provision 24,978,000 121,000 15,391,000
U.S. Federal income tax rate (in hundredths) 35.00%    
Deferred tax assets [Abstract]      
Inventories 16,115,000 16,036,000  
Allowance for customer returns 10,660,000 9,308,000  
Postretirement benefits 2,911,000 3,389,000  
Allowance for doubtful accounts 2,223,000 2,480,000  
Accrued salaries and benefits 7,924,000 7,828,000  
Net operating loss 84,000 383,000  
Capital loss 6,007,000 6,133,000  
Tax credit carryforwards 1,167,000 4,065,000  
Deferred gain on building sale 2,123,000 2,583,000  
Accrued asbestos liabilities 10,358,000 10,905,000  
Other 470,000 2,975,000  
Deferred tax assets, gross 60,042,000 66,085,000  
Valuation Allowance (7,174,000) [1] (7,843,000) [1]  
Total deferred tax assets 52,868,000 58,242,000  
Deferred tax liabilities [Abstract]      
Depreciation 8,328,000 8,906,000  
Promotional costs 197,000 200,000  
Other 0 0  
Total deferred tax liabilities 8,525,000 9,106,000  
Net deferred tax assets 44,343,000 49,136,000  
Current net deferred tax assets 33,258,000 32,199,000  
Non-current net deferred tax assets 11,085,000 16,937,000  
Tax valuation allowance allocated to long term deferred tax assets 7,200,000 7,800,000  
Tax valuation allowance allocated to current deferred tax assets 0 0  
Realized non recurring benefit related to deferred tax valuation allowance   21,500,000  
Valuation allowance, remaining amount 7,200,000    
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at January 1, 2012 349,000    
Increase based on tax positions taken in the current year 0    
Decrease based on tax positions taken in the current year 0    
Balance at December 31, 2012 349,000 349,000  
Capital Loss Carryforward [Member]
      
Operating Loss Carryforwards [Line Items]      
Capital loss carryforward 15,500,000    
Foreign Tax Authority [Member]
      
Operating Loss Carryforwards [Line Items]      
Operating Loss Carryforwards 400,000    
Operating Loss Carryforwards, Expiration Dates 2013    
Tax credit carryforward $ 900,000    
Foreign Tax Authority [Member] | Minimum [Member]
      
Income Tax Contingency [Line Items]      
Period for statutes of limitations 2 years    
Foreign Tax Authority [Member] | Maximum [Member]
      
Income Tax Contingency [Line Items]      
Period for statutes of limitations 6 years    
State and Local Jurisdiction [Member]
      
Income Tax Contingency [Line Items]      
Open Tax Years 2008 onward    
Canada Tax Authority [Member]
      
Income Tax Contingency [Line Items]      
Open Tax Years 2008 onward    
Hong Kong Tax Authority [Member]
      
Income Tax Contingency [Line Items]      
Open Tax Years 2007 onward    
Poland Tax Authority [Member]
      
Income Tax Contingency [Line Items]      
Open Tax Years 2008 onward    
[1] Current net deferred tax assets are $33.2 million and $32.2 million for 2012 and 2011, respectively. Non-current net deferred tax assets are $11.1 million and $16.9 million for 2012 and 2011, respectively. The tax valuation allowance was allocated to long term deferred tax assets in the amounts of $7.2 million and $7.8 million in 2012 and 2011, respectively. None of the valuation allowance was allocated to current deferred tax assets in 2012 and 2011.