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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]

The following provides a reconciliation of changes in product warranty and recall liability:

 

Three months ended March 31   2013     2012  
             
Product warranty and recall at beginning of period   $ 6,107     $ 5,301  
Accruals for products shipped during period     1,079       856  
Aggregate changes in pre-existing liabilities due to claim developments     529       295  
Settlements made during the period (in cash or in kind)     (1,498 )     (1,030 )
Product warranty and recall at end of period   $ 6,217     $ 5,422