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Note 11 - Accrued Liabilities
 12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Accrued Liabilities [Text Block]
(
11
)
Accrued Liabilities
 
Accrued liabilities consist of the following (in thousands):
 
   
December 31,
  
   
2019
    
2018
  
Salaries, wages, employment taxes and withholdings
   $
2,416
     $
2,019
  
Employee benefit plans
    
1,517
      
1,050
  
Accrued professional fees
    
966
      
821
  
Income, property and other taxes
    
355
      
453
  
Contract liabilities
    
5,769
      
8,369
  
Deferred gain from sale-leaseback
    
313
      
500
  
Other
    
1,159
      
1,753
  
Total
   $
12,495
     $
14,965
  
 
Included in other accrued liabilities are accrued operating expenses, accrued warranty expenses, accrued interest, and other items,
none
of which exceed
5%
of total current liabilities.