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Segment Information (Details 2) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Net sales and long-lived assets by geographical area |  |
Net sales | $ 259,244 | $ 244,779
Wood construction products |  |
Net sales and long-lived assets by geographical area |  |
Net sales | 217,613 | 212,547
Concrete construction products |  |
Net sales and long-lived assets by geographical area |  |
Net sales | 41,577 | 32,156
Other |  |
Net sales and long-lived assets by geographical area |  |
Net sales | 54 | 76
North America |  |
Net sales and long-lived assets by geographical area |  |
Net sales | $ 221,431 | $ 206,212

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