Transactions With Related Parties (Tables)

12 Months Ended

Dec. 31, 2017

Related Party Transactions [Abstract]

Schedule Of Amount Received In Public And Private Partnerships [Table Text Block]

Amounts received in the years ended December 31, from both public and private Partnerships for which Unit is a general partner are as follows:

	2017		2016		2015
	(In thousands)
Well supervision and other fees	$	172	$	254	$	423
General and administrative expense reimbursement	—		6		18