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Summary of Significant Accounting Policies (Schedule of Product Warranty Liability) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Summary of Significant Accounting Policies    
Product warranty and recall at beginning of period $ 10,494 $ 9,979
Accruals for warranties established during period 7,131 6,217
Aggregate changes in pre-existing liabilities due to claim developments 1,037 646
Settlements made during the period (7,600) (5,831)
Foreign currency translation (266) (517)
Product warranty and recall at end of period $ 10,796 $ 10,494