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Note 8 - Product Warranty Obligations (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
 
 
Three Months E
nded
June 30
,
 
 
Six Months Ended
June 30,
 
 
 
201
6
 
 
201
5
 
 
2016
 
 
2015
 
                                 
Balance at beginning of period
  $ 31,904     $ 29,277     $ 30,197     $ 30,909  
Product warranty reserve assumed in acquisition
    -       -       840       -  
Payments
    (4,900 )     (5,100 )     (8,552 )     (10,533 )
Provision for warranties issued
    4,220       4,480       7,702       9,029  
Changes in estimates for pre-existing warranties
    (489 )     (472 )     548       (1,220 )
Balance at end of period
  $ 30,735     $ 28,185     $ 30,735     $ 28,185  
 
 
Three Months E
nded
June 30
,
 
 
Six Months Ended
June 30,
 
 
 
201
6
 
 
201
5
 
 
2016
 
 
2015
 
                                 
Balance at beginning of period
  $ 28,830     $ 27,531     $ 28,961     $ 27,193  
Deferred revenue on extended warranty contracts sold
    1,619       810       2,763       2,190  
Amortization of deferred revenue on extended warranty contracts
    (1,367 )     (1,100 )     (2,642 )     (2,142 )
Balance at end of period
  $ 29,082     $ 27,241     $ 29,082     $ 27,241  
Product Warranty Obligations Included In Consolidated Balance Sheet [Table Text Block]
 
 
June 30
,
 
 
December 31,
 
 
 
201
6
 
 
201
5
 
Product warranty liability
               
Current portion - other accrued liabilities
  $ 21,071     $ 21,726  
Long-term portion - other long-term liabilities
    9,664       8,471  
Total
  $ 30,735     $ 30,197  
                 
Deferred revenue related to extended warranty
               
Current portion - other accrued liabilities
  $ 5,034     $ 6,026  
Long-term portion - other long-term liabilities
    24,048       22,935  
Total
  $ 29,082     $ 28,961