Accounts Receivable, net (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Schedule of Accounts Receivable

Accounts receivable at December 31, 2019 and 2018 were as follows (in thousands):

	December 31,
	2019		2018
Trade accounts receivable, net of allowance of $5,129 and $3,925, respectively	$	101,718	$	114,630
Unbilled receivables	43,422		54,591
Taxes receivable	18,516		15,762
Affiliated (1)	549		549
Other receivables	2,489		3,882
Total accounts receivable, net	$	166,694	$	189,414

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Amounts represent expenditures on behalf of non-consolidated affiliates.