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Note 9 - Product Warranty Obligations (Tables)
12 Months Ended
Dec. 31, 2015
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
 
 
Year Ended December 31,
 
 
 
2015
 
 
2014
 
 
2013
 
                         
Balance at beginning of year
  $ 30,909     $ 33,734     $ 36,111  
Product warranty reserve assumed in acquisition
    351       360       600  
Payments
    (21,686 )     (20,975 )     (19,084 )
Provision for warranties issued
    20,823       22,890       33,707  
Changes in estimates for pre-existing warranties
    (200 )     (5,100 )     (17,600 )
Balance at end of year
  $ 30,197     $ 30,909     $ 33,734  
 
 
Year Ended December 31,
 
 
 
2015
 
 
2014
 
 
2013
 
                         
Balance at beginning of year
  $ 27,193     $ 23,092     $ 13,474  
Deferred revenue contracts assumed in acquisition
    291       -       -  
Deferred revenue contracts sold
    5,978       7,343       11,998  
Amortization of deferred revenue contracts
    (4,501 )     (3,242 )     (2,380 )
Balance at end of year
  $ 28,961     $ 27,193     $ 23,092  
Product Warranty Obligations Included In Consolidated Balance Sheet [Table Text Block]
 
 
December 31,
 
 
 
201
5
 
 
201
4
 
Product warranty liability
               
Current portion - other accrued liabilities
  $ 21,726     $ 24,143  
Long-term portion - other long-term liabilities
    8,471       6,766  
Total
  $ 30,197     $ 30,909  
                 
Deferred revenue related to extended warranty
               
Current portion - other accrued liabilities
  $ 6,026     $ 4,519  
Long-term portion - other long-term liabilities
    22,935       22,674  
Total
  $ 28,961     $ 27,193