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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, 2019
Mar. 31, 2018
Commitments and Contingencies [Abstract]    
Product warranty and recall at beginning of period $ 10,494 $ 9,979
Accruals for products shipped during period 1,545 2,274
Aggregate changes in pre-existing liabilities due to claim developments 1,238 387
Settlements made during the period (2,715) (1,772)
Foreign currency translation (215) (20)
Product warranty and recall at end of period $ 10,347 $ 10,848