Receivables (Tables) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]

Schedule of Trade Accounts Receivables Net

Accounts receivable – trade, net consisted of the following: 

	December 31,
	2020		2019
Accounts receivable - trade	$	398,723	$	418,064
Allowance for credit losses	(6,258)		(1,062)
Accounts receivable - trade, net	$	392,465	$	417,002

Schedule of Allowance For Credit Losses

The following table presents the activity of our allowance for credit losses for the periods indicated:

	December 31,
	2020		2019		2018
Balance at beginning of period	$	1,062	$	7,393	$	8,468
Charged to costs and expenses, net of recoveries	5,504		(5,572)		31
Amounts written off	(308)		(759)		(1,106)
Balance at end of period	$	6,258	$	1,062	$	7,393

Charged to costs and expenses, net of recoveries

$ 5,504

$ (5,572)

$ 31