Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Accounts Receivable, Allowance for Credit Loss

The following table sets forth the Company’s allowance for doubtful accounts:

	Allowance for Doubtful Accounts
December 31, 2019	$	1,073
Current period provision	286
Write-off against allowance	(415)
December 31, 2020	$	944

Accounts Receivable Detail

Accounts receivable as of December 31, 2020 and 2019 are summarized as follows:

	December 31,
	2020		2019
Accounts receivable	$	59,242	$	74,689
Allowance for doubtful accounts	(944)		(1,073)
Accounts receivable - net	$	58,298	$	73,616

The Company’s customers are principally in the rail, transportation, heavy civil, agricultural, energy, commercial and residential infrastructure sectors. As of December 31, 2020 and 2019, trade receivables, net of allowance for doubtful accounts, from customers were as follows:

	December 31,
	2020		2019
Rail Technologies and Services	$	33,960	$	44,941
Infrastructure Solutions	24,252		28,557
Trade accounts receivable - net	$	58,212	$	73,498