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Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Upon the completion of the TAS acquisition, the Company entered into a lease arrangement with an entity in which an employee owns an interest. This lease is for office space and yard facilities used by the concrete segment. Annual lease expense was approximately $478,000 and $820,000 for the years ending December 31, 2017 and 2016, respectively. Due to the resignation of this employee, these transactions ceased to be related party transactions as of July 31, 2017 and resulted in a lower annual lease expense for 2017 compared to 2016.