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Note 10 - Guarantees
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Commitments Contingencies and Guarantees [Text Block]
10.
Guarantees
 
Accrued Warranty
 
Changes in accrued warranty during the
three
-year period ended
December
31,
2016
was as follows
:
 
(in thousands)
  
2016
   
2015
   
2014
 
Beginning balance
   $
4,886
     $
5,848
     $
4,673
  
Warranty accruals
    
6,088
      
6,747
      
6,176
  
Warranty payments
    
(6,624
 )    
(7,709
 )    
(5,001
 )
Ending balance
   $
4,350
     $
4,886
     $
5,848
  
 
Accrued warranty amounts expected to be incurred after
one
year are included in noncurrent other accrued liabilities in the consolidated balance sheet. These amounts total
$0.6
 million at
December
31,
2016
and
$1.1
 million at
December
26,
2015.
 
Lines of Credit
 
Our wholly owned Ismeca subsidiary has
two
available lines of credit which provide it with borrowings of up to a total of
2.5
 million Swiss Francs. At
December
31,
2016
and
December
26,
2015
no
amounts were outstanding under the lines of credit.