Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Accounts Receivable Detail

The Company’s customers are principally in the transportation and energy infrastructure sectors. As of December 31, 2018 and 2017, trade receivables, net of allowance for doubtful accounts, from customers were as follows:

	December 31,
	2018		2017
Rail Products and Services	$	43,180	$	31,225
Construction Products	19,998		20,070
Tubular and Energy Services	19,121		21,068
Trade accounts receivable - net	$	82,299	$	72,363