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Commitments and Contingencies (Reconciliation of Changes in Product Warranty and Recall Liability) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Commitments and Contingencies [Abstract]    
Product warranty and recall at beginning of period $ 7,601 $ 6,414
Accruals for products shipped during period 2,716 3,329
Aggregate changes in pre-existing liabilities due to claim developments (122) 194
Settlements made during the period (3,715) (2,414)
Product warranty and recall at end of period $ 6,480 $ 7,523