Note 3 - Trade Accounts Receivable

12 Months Ended

Dec. 31, 2021

Notes to Financial Statements

Financing Receivables [Text Block]

3.     TRADE ACCOUNTS RECEIVABLE

The Company's receivables result primarily from the sale of transportation and logistics services. The Company performs ongoing credit evaluations of its customers and generally does not require collateral for accounts receivable. Accounts receivable, which consist of both billed and unbilled receivables, are presented net of current estimated credit losses. Accounts outstanding longer than contractual payment terms are considered past due and are reviewed individually for collectability. Accounts receivable balances consist of the following components as of December 31, 2021 and 2020:

	2021			2020
	(in thousands)
Billed	$	105,992		$	68,584
Unbilled		20,388			12,629
Current estimated credit losses		(4,526	)		(3,482	)
Total accounts receivable—net	$	121,854		$	77,731

An analysis of changes in current estimated credit losses for the years ended December 31, 2021, 2020, and 2019 follows:

	2021		2020		2019
	(in thousands)
Balance—beginning of year	$	3,482	$	2,952	$	2,224
Provision for bad debts		1,044		530		728
Charge-offs		-		-		-
Recoveries		-		-		-
Balance—end of year	$	4,526	$	3,482	$	2,952