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Accounts Receivable
9 Months Ended
Sep. 30, 2019
Accounts Receivable Additional Disclosures [Abstract]  
Accounts Receivable Accounts ReceivableCredit is extended based upon an evaluation of the customer’s financial condition and, while collateral is not required, the Company periodically receives surety bonds that guarantee payment. Credit terms are consistent with industry standards and practices. The amounts of trade accounts receivable as of September 30, 2019 and December 31, 2018 have been reduced by an allowance for doubtful accounts of $1,152 and $932, respectively. Changes in reserves for uncollectable accounts, which are recorded as part of “Selling and administrative expenses” in the Condensed Consolidated Statements of Operations, resulted in income of $96 and $267 for the three months ended September 30, 2019 and 2018, respectively, and expense of $8 and income of $986 for the nine months ended September 30, 2019 and 2018, respectively.