Asset Retirement Obligation (Tables)

3 Months Ended

Mar. 31, 2019

Asset Retirement Obligation Tables Abstract

Summary of reconciliation of the ARO

(in thousands)	Three Months Ended March 31,
	2019			2018
Balance at beginning of period	$	22,310		$	7,737
Accretion expense		394			141
Additions during period		-			2,921
		22,704			10,799
Less: ARO recognized as a current liability		(3,392	)		(767	)
Balance at end of period	$	19,312		$	10,032