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Acquisitions (Tables) | 3 Months Ended
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Mar. 31, 2019
Business Combinations [Abstract] |
Business acquisition, pro forma information | The following unaudited pro forma financial information presents the combined results of operations of Rogers and Griswold as if the Griswold acquisition had occurred on January 1, 2017. The unaudited pro forma financial information is not intended to represent or be indicative of our consolidated results of operations that would have been reported had the Griswold acquisition been completed as of January 1, 2017, and should not be taken as indicative of our future consolidated results of operations.
| Three Months Ended
(Dollars in thousands) | March 31, 2018
Net sales | $ | 221,723 |
Net income | 25,882 |

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