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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, 2016
Sep. 30, 2015
Commitments and Contingencies [Abstract]    
Product warranty and recall at beginning of period $ 6,419 $ 7,601
Accruals for products shipped during period 3,010 2,716
Aggregate changes in pre-existing liabilities due to claim developments (272) (122)
Settlements made during the period (1,332) (3,715)
Product warranty and recall at end of period $ 7,825 $ 6,480