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Commitments and Contingencies (Reconciliation of Changes in Product Warranty and Recall Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Commitments and Contingencies [Abstract]    
Product warranty and recall at beginning of period $ 6,419 $ 7,601
Accruals for products shipped during period 1,358 1,381
Aggregate changes in pre-existing liabilities due to claim developments (302) (57)
Settlements made during the period (348) (1,745)
Product warranty and recall at end of period $ 7,127 $ 7,180