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Segment Information (Details 2) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Net sales and long-lived assets by geographical area        
Net sales $ 216,665 $ 207,910 $ 393,156 $ 376,198
Wood Construction Products        
Net sales and long-lived assets by geographical area        
Net sales 184,133 176,363 335,512 321,042
Concrete Construction Products        
Net sales and long-lived assets by geographical area        
Net sales 32,375 31,493 57,385 55,031
Other        
Net sales and long-lived assets by geographical area        
Net sales $ 157 $ 54 $ 259 $ 125