Related Parties

The Company purchases some supplies from an entity controlled by the Company’s CEO. The Company sometimes makes sales to the CEO for parts. Additionally, the Company sells units to an entity owned by a member of the President's immediate family. This entity is also one of the Company’s Representatives and as such, the Company makes payments to the entity for third party products. All related party transactions are made on standard Company terms. Following is a summary of transactions and balances with affiliates:



	Years Ending December 31,
	2018		2017		2016
	(in thousands)
Sales to affiliates	$	1,442	$	1,579	$	1,671
Payments to affiliates	342		432		697

			December 31,
			2018		2017
			(in thousands)
Due from affiliates			$	79	$	9
Due to affiliates			—		—