Transactions with Affiliates (Tables)

6 Months Ended

Jun. 30, 2019

Related Party Transactions [Abstract]

Activities with affiliates

Activities with affiliates were as follows for the periods indicated (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
Affiliate billings to us	$	26	$	25	$	43	$	40
Billings to affiliates	1		1		2		3
Rentals paid to affiliate	122		122		244		244