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Basis of Presentation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 01, 2020
Sep. 30, 2020
Sep. 30, 2020
Cash paid for acquisition     $ 8,392
Carthage Crushed Limestone      
Ownership acquired (as a percent) 100.00%    
Cash paid for acquisition $ 8,400    
Property, plant and equipment $ 7,500    
Revenue of business acquisition   $ 2,300 $ 2,300