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Restructuring and Integration Expense (Tables)
 12 Months Ended
Dec. 31, 2020
Restructuring and Integration Expense [Abstract]  
Restructuring and Integration Expense
The aggregated liabilities included in “sundry payables and accrued expenses” and “other accrued liabilities” in the consolidated balance sheet relating to the restructuring and integration activities as of and for the years ended December 31, 2020 and 2019, consisted of the following (in thousands):

 
  
Workforce
Reduction
    
Other Exit
Costs
    
Total
  
Exit activity liability at December 31, 2018
  
$
742
    
$
—
    
$
742
  
Restructuring and integration costs:
                        
Amounts provided for during 2019 (1)
    
—
      
2,585
      
2,585
  
Cash payments
    
(406
)
    
(1,688
)
    
(2,094
)
Reclassification of environmental liability (1)
    
—
      
(386
)
    
(386
)
Reclassification of inventory reserves
    
—
      
(511
)
    
(511
)
Exit activity liability at December 31, 2019
  
$
336
    
$
—
    
$
336
  
Restructuring and integration costs:
                        
Amounts provided for during 2020 (1)
    
—
      
464
      
464
  
Cash payments
    
(157
)
    
(214
)
    
(371
)
Reclassification of environmental liability (1)
    
—
      
(250
)
    
(250
)
Exit activity liability at December 31, 2020
  
$
179
    
$
—
    
$
179
  

(1)
Included in restructuring and integration costs in 2020 and 2019 is a $0.3 million and $0.4 million increase, respectively, in environmental cleanup costs related to ongoing monitoring and remediation in connection with the prior closure of our manufacturing operations at our Long Island City, New York location.  The environmental liability has been reclassed to accrued liabilities as of December 31, 2020 and 2019, respectively.