DEFERRED REVENUE (Tables)

9 Months Ended

Sep. 30, 2019

Revenue From Contract With Customer [Abstract]

Rollforward of deferred revenue

A rollforward of current deferred revenue follows.

	Utica Shale		Williston Basin		DJ Basin		Piceance Basin		Barnett Shale		Marcellus Shale		Total current
	(In thousands)
Current deferred revenue,     January 1, 2019	$	18	$	1,414	$	739	$	7,616	$	1,642	$	38	$	11,467
Additions		14		1,779		3,020		14,650		1,235		28		20,726
Less revenue recognized		14		1,259		1,745		15,324		1,228		28		19,598
Current deferred revenue,     September 30, 2019	$	18	$	1,934	$	2,014	$	6,942	$	1,649	$	38	$	12,595

A rollforward of noncurrent deferred revenue follows.

	Utica Shale		Williston Basin		DJ Basin		Piceance Basin		Barnett Shale		Marcellus Shale		Total noncurrent
	(In thousands)
Noncurrent deferred revenue,     January 1, 2019	$	21	$	4,393	$	7,284	$	17,942	$	9,628	$	236	$	39,504
Additions		—		1,940		3,637		4,857		1,193		—		11,627
Less reclassification to current     deferred revenue		14		2,225		3,020		4,775		1,235		28		11,297
Noncurrent deferred revenue,     September 30, 2019	$	7	$	4,108	$	7,901	$	18,024	$	9,586	$	208	$	39,834