Segments

We evaluate business segment performance based on income (loss) before income taxes exclusive of corporate general and administrative costs and interest expense, which are not allocated to the segments. Our shale solutions business is comprised of three operating divisions, which we consider to be operating and reportable segments of our operations: (1) the Northeast division comprising the Marcellus and Utica Shale areas, (2) the Southern division comprising the Haynesville Shale area and the Eagle Ford Shale area (which we substantially exited during the six months ended June 30, 2018) and (3) the Rocky Mountain division comprising the Bakken Shale area. Corporate/Other includes certain corporate costs and certain other corporate assets.

Financial information for our reportable segments related to operations is presented below.



	Rocky Mountain			Northeast			Southern (b)			Corporate/ Other			Total
Three months ended March 31, 2019
Revenue	$	24,877		$	11,840		$	5,910		$	—		$	42,627
Direct operating expenses	19,828			9,715			3,014			—			32,557
General and administrative expenses	1,046			846			399			3,184			5,475
Depreciation and amortization	4,299			2,664			2,160			12			9,135
Operating loss	(296		)	(1,502		)	337			(3,196		)	(4,657		)
Loss before income taxes	(358		)	(1,595		)	291			(4,614		)	(6,276		)

As of March 31, 2019
Total assets (a)	109,333			89,157			82,979			7,582			289,051
Total assets held for sale	2,876			928			22			778			4,604

Three months ended March 31, 2018
Revenue	30,770			9,113			9,786			—			49,669
Direct operating expenses	26,346			7,814			7,467			—			41,627
General and administrative expenses	1,276			762			578			16,704			19,320
Depreciation and amortization	6,289			4,306			4,124			25			14,744
Operating loss	(3,141		)	(3,838		)	(7,044		)	(16,729		)	(30,752		)
Loss before income taxes	(3,202		)	(3,899		)	(7,111		)	(17,955		)	(32,167		)

As of December 31, 2018
Total assets (a)	113,767			88,501			84,318			9,350			295,936
Total assets held for sale	—			—			2,004			778			2,782

_____________________


(a)	Total assets exclude intercompany receivables eliminated in consolidation.


(b)	The Southern division includes the Eagle Ford Shale area which we substantially exited during the six months ended June 30, 2018. See Note 13 for further discussion.