Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current [Abstract]
Domestic	$ 30,368	$ 14,632	$ 26,821
Foreign	4,064	3,019	3,180
Total current	34,432	17,651	30,001
Deferred [Abstract]
Domestic	(7,418)	4,677	(10,132)
Foreign	(52)	417	108
Total deferred	(7,470)	5,094	(10,024)
Total income tax provision	26,962	22,745	19,977
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 21%	22,550	19,277	16,135
Increase (decrease) in tax rate resulting from [Abstract]
State and local income taxes, net of federal income tax benefit	3,781	3,328	2,781
Income tax (tax benefits) attributable to foreign income	330	191	1,598
Other non-deductible items, net	(563)	(409)	(559)
Change in valuation allowance	864	358	22
Total income tax provision	$ 26,962	$ 22,745	$ 19,977
U.S. Federal income tax rate	21.00%	21.00%	21.00%
Deferred tax assets [Abstract]
Inventories	$ 12,773	$ 12,077
Allowance for customer returns	13,804	11,969
Postretirement benefits	42	50
Allowance for doubtful accounts	1,412	1,262
Accrued salaries and benefits	12,984	9,826
Tax credit carryforwards	1,451	609
Accrued asbestos liabilities	15,372	13,132
Other	170	148
Deferred tax assets, gross	58,008	49,073
Valuation allowance	(1,621)	(757)
Total deferred tax assets	56,387	48,316
Deferred tax liabilities [Abstract]
Depreciation	7,710	7,706
Other	3,907	3,338
Total deferred tax liabilities	11,617	11,044
Net deferred tax assets	44,770	37,272
Valuation allowance, remaining amount	1,600
Income Tax Contingency [Abstract]
Recognized uncertain tax positions	$ 0	$ 0	$ 0
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Abstract]
Operating Loss Carryforwards, Expiration Dates	Dec. 31, 2028
Tax credit carryforward	$ 1,500
Foreign Tax Authority [Member] | Minimum [Member]
Income Tax Contingency [Abstract]
Period for statutes of limitations	2 years
Foreign Tax Authority [Member] | Maximum [Member]
Income Tax Contingency [Abstract]
Period for statutes of limitations	6 years
State and Local [Member]
Income Tax Contingency [Abstract]
Open Tax Years	2016 2017 2018 2019
Canada Tax Authority [Member]
Income Tax Contingency [Abstract]
Open Tax Years	2016 2017 2018 2019
Hong Kong Tax Authority [Member]
Income Tax Contingency [Abstract]
Open Tax Years	2015 2016 2017 2018 2019
Mexican Tax Authority [Member]
Income Tax Contingency [Abstract]
Open Tax Years	2016 2017 2018 2019
Poland Tax Authority [Member]
Income Tax Contingency [Abstract]
Open Tax Years	2015 2016 2017 2018 2019