14. Business Segments

At March 31, 2018, the Company had three business segments: (i) contract drilling of oil and natural gas wells, (ii) pressure pumping services and (iii) directional drilling services. Each of these segments represents a distinct type of business and has a separate management team that reports to the Company’s chief operating decision maker. The results of operations in these segments are regularly reviewed by the chief operating decision maker for purposes of determining resource allocation and assessing performance.

The following tables summarize selected financial information relating to the Company’s business segments (in thousands):

	Three Months Ended
	March 31,
	2018			2017
Revenues:
Contract drilling	$	328,153		$	159,055
Pressure pumping		406,784			141,174
Directional drilling		48,616			—
Other operations (a)		29,653			5,618
Elimination of intercompany revenues (b)		(4,042	)		(672	)
Total revenues	$	809,164		$	305,175

Income (loss) before income taxes:
Contract drilling	$	(17,103	)	$	(61,706	)
Pressure pumping		25,389			(22,891	)
Directional drilling		(4,913	)		—
Other operations		(4,089	)		(1,951	)
Corporate		(23,807	)		(18,995	)
Other operating income, net (c)		2,421			12,904
Interest income		1,423			406
Interest expense		(13,625	)		(8,270	)
Other		169			17
Loss before income taxes	$	(34,135	)	$	(100,486	)

Depreciation, depletion, amortization and impairment
Contract drilling	$	130,917		$	110,559
Pressure pumping		56,522			42,250
Directional drilling		10,902			—
Other operations		9,314			2,172
Corporate		2,237			1,236
Total depreciation, depletion, amortization and impairment	$	209,892		$	156,217

Capital expenditures
Contract drilling	$	75,247		$	44,221
Pressure pumping		24,923			19,413
Directional drilling		12,829			—
Other operations		9,396			4,352
Corporate		526			454
Total capital expenditures	$	122,921		$	68,440

	March 31,		December 31,
	2018		2017
Identifiable assets:
Contract drilling	$	3,905,159	$	3,931,994
Pressure pumping		1,211,349		1,209,424
Directional drilling		311,054		301,275
Other operations		176,816		172,094
Corporate (d)		411,346		144,069
Total assets	$	6,015,724	$	5,758,856

(a)	Other operations includes the Company’s oilfield rentals business, pipe handling components and related technology business, oil and natural gas working interests and Middle East/North Africa activities.

(b)	Intercompany revenues consists of contract drilling intercompany revenues for services provided to other operations and also includes revenues from other operations for services provided to contract drilling, pressure pumping and within other operations.

(c)

Other operating income includes net gains associated with the disposal of assets related to corporate strategy decisions of the executive management group. Accordingly, the related gains have been excluded from the operating results of specific segments. This caption also includes expenses related to certain legal settlements net of insurance reimbursements.

(d)	Corporate assets primarily include cash on hand and certain property and equipment.