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Income Taxes (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Deferred Tax Assets, Gross $ 5,293,000    
Deferred Tax Charge (Benefit) Adjustment     $ (484,000)
Operating Loss Carryforwards, Expiration Date Dec. 31, 2039    
Tax Credit Carryforward, Amount $ 3,120,000    
Operating Loss Carryforwards, Valuation Allowance   $ 0  
Unrecognized Tax Benefits 0 0  
Transitional Tax, net     299,000
Employee Service Shared-based Compensation, Tax Benefit from Compensation Expense, Restricted Stock (110,000) (33,000) 126,000
Current:      
Federal - US 0 11,000 1,993,000
Federal - Foreign 685,000 1,023,000 613,000
State and local 20,000 14,000 24,000
Current income tax expense (benefit) 705,000 1,048,000 2,630,000
Deferred:      
Federal 738,000 (1,355,000) (407,000)
Deferred Foreign Income Tax Expense (Benefit) (1,824,000) (289,000) 52,000
State and local 26,000 (68,000) 11,000
Deferred income tax expense (benefit) (1,060,000) (1,712,000) (344,000)
Total income taxes (355,000) (664,000) 2,286,000
Reconciliation of income tax provision:      
Provision at federal statutory rate - US (3,274,000) (1,145,000) 2,634,000
Deferred Tax Charge (Benefit) Adjustment, net 0 0 (185,000)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 3,267,000 0 0
Effect of foreign taxes (209,000) 213,000 (58,000)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount 0 236,000 0
State and local tax expense (102,000) (54,000) 35,000
Other (37,000) 86,000 (140,000)
Components of deferred tax assets (liabilities):      
Deferred Tax Assets, Tax Credit Carryforwards, Other 686,000 394,000  
Accrued liabilities 477,000 568,000  
Accounts receivable 108,000 521,000  
Inventory 587,000 525,000  
Other, net (190,000) (446,000)  
Deferred Tax Assets, Gross, Current 6,596,000 2,018,000  
Property, plant, and equipment (5,580,000) (3,941,000)  
Post retirement benefits 2,090,000 1,848,000  
Deferred Tax Assets, Goodwill and Intangible Assets 1,973,000 994,000  
Other, net 214,000 234,000  
Deferred Tax Liabilities, Gross, Noncurrent 1,303,000 865,000  
Deferred Tax Assets, Valuation Allowance (3,267,000) 0  
Deferred Tax Assets, Operating Loss Carryforwards 4,928,000 456,000  
Deferred Tax Assets, Net 2,026,000 $ 1,153,000  
Equity [Member]      
Employee Service Shared-based Compensation, Tax Benefit from Compensation Expense, Restricted Stock     $ 126,000
UNITED STATES      
Operating Loss Carryforwards 17,994,000    
Deferred Tax Assets, Gross 3,267,000    
CANADA      
Operating Loss Carryforwards 5,772,000    
Deferred Tax Assets, Gross 1,555,000    
MEXICO      
Deferred Tax Assets, Gross 471,000    
Future Tax Period [Member] | CANADA      
Operating Loss Carryforwards 2,116,000    
Carryback [Member] | CANADA      
Operating Loss Carryforwards $ 3,656,000