Reportable Segments (Tables)

9 Months Ended

Sep. 30, 2017

Revenue and other financial information by reportable segment

The following table presents revenue and other financial information by reportable segment during the three and nine months ended September 30, 2017 and 2016 (in thousands):



	Contract Operations		Aftermarket Services		Reportable Segments Total
Three months ended September 30, 2017:
Revenue from external customers	$	153,524	$	44,329	$	197,853
Gross margin	81,573		5,843		87,416
Three months ended September 30, 2016:
Revenue from external customers	$	156,599	$	39,250	$	195,849
Gross margin	96,823		6,500		103,323

Nine months ended September 30, 2017:
Revenue from external customers	$	454,622	$	131,098	$	585,720
Gross margin	256,331		19,271		275,602
Nine months ended September 30, 2016:
Revenue from external customers	$	495,811	$	117,478	$	613,289
Gross margin	308,990		20,013		329,003

Reconciliation of net income (loss) to gross margin

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



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Total gross margin	$	87,416		$	103,323		$	275,602		$	329,003
Less:
Selling, general and administrative	29,108			25,448			81,823			87,745
Depreciation and amortization	47,463			52,068			142,483			157,891
Long-lived asset impairment	7,105			16,713			20,858			40,381
Restatement and other charges	566			426			3,287			860
Restructuring and other charges	422			4,689			1,245			15,758
Interest expense	22,892			21,365			66,817			62,842
Debt extinguishment costs	—			—			291			—
Other income, net	(2,716		)	(2,470		)	(4,472		)	(4,640		)
Loss before income taxes	$	(17,424	)	$	(14,916	)	$	(36,730	)	$	(31,834	)