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Segments (Tables)

6 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Revenue and other financial information by reportable segment

The following table presents revenue and gross margin by segment during the three and six months ended June 30, 2019 and 2018 (in thousands): 

	Contract Operations				Aftermarket Services				Total
Three months ended June 30, 2019
Revenue	$	186,258			$	52,132			$	238,390
Gross margin	115,737				9,917				125,654
Three months ended June 30, 2018
Revenue	$	165,450			$	61,420			$	226,870
Gross margin	97,641				10,627				108,268
Six months ended June 30, 2019
Revenue	$	368,765			$	105,784			$	474,549
Gross margin	223,509				19,667				243,176
Six months ended June 30, 2018
Revenue	$	326,647			$	112,263			$	438,910
Gross margin	194,243				19,133				213,376

Reconciliation of net income (loss) to gross margin

The following table reconciles total gross margin to income before income taxes (in thousands):

	Three Months Ended June 30,								Six Months Ended June 30,
	2019				2018				2019				2018
Total gross margin	$	125,654			$	108,268			$	243,176			$	213,376
Less:
Selling, general and administrative	28,618				26,649				57,607				54,157
Depreciation and amortization	45,482				43,331				89,588				87,786
Long-lived asset impairment	8,632				6,953				11,724				11,663
Restatement and other charges	24				(1,076		)		445				(591		)
Interest expense	25,954				23,337				49,571				45,884
Debt extinguishment loss	3,653				2,450				3,653				2,450
Transaction-related costs	2,687				5,686				2,867				9,811
Other income, net	(2,010		)		(1,644		)		(2,215		)		(2,789		)
Income before income taxes	$	12,614			$	2,582			$	29,936			$	5,005

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- Definition

Reconciliation Gross Margin To Income Before Income Taxes

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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 280
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