Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2013

Summary of Significant Accounting Policies [Abstract]

Summary of reconciliation of the ARO

	Nine Months Ended September 30,
(in thousands)	2013		2012
Balance at beginning of period	$	2,321	$	2,149
Accretion expense		103		76
Additions assumed with consolidated partnerships		34		-
Additions during period		164		55
Balance at end of period	$	2,622	$	2,280