Related Parties (Tables)

9 Months Ended

Sep. 30, 2019

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The following is a summary of transactions and balance with affiliates:

	Three months ended				Nine months ended
	September 30, 2019		September 30, 2018		September 30, 2019		September 30, 2018
	(in thousands)
Sales to affiliates	$	338	$	298	$	706	$	890
Payments to affiliates	32		48		225		159

	September 30, 2019		December 31, 2018
	(in thousands)
Due from affiliates	$	119	$	79
Due to affiliates	—		—