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International Operations and Geographic Information (Schedule of Selected Geographic Financial Information) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | $ 1,119,138 | $ 1,008,822 | $ 912,380
Long-lived assets | 641,195 | 268,041 | 246,097
United States |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 774,854 | 726,582 | 663,600
Long-lived assets | 515,189 | 191,958 | 171,048
France |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 99,145 | 90,956 | 86,443
Long-lived assets | 19,513 | 18,650 | 19,324
Canada |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 72,950 | 62,077 | 52,332
Long-lived assets | 32,606 | 21,647 | 24,302
United Kingdom |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 52,098 | 51,043 | 44,416
Long-lived assets | 19,840 | 19,270 | 18,948
Brazil |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 17,919 | 16,829 | 9,321
Long-lived assets | 15,096 | 15,701 | 11,558
Netherlands |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 23,462 | 3,983 | 4,312
Long-lived assets | 37,930 | 0 | 0
China |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 16,384 | 9,479 | 2,071
Germany |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 7,825 | 1,600 | 2,811
Australia |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | 7,550 | 9,055 | 12,778
Long-lived assets | 1,021 | 815 | 917
Other |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Net sales | $ 46,951 | $ 37,218 | $ 34,296

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