Reportable Segments (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2017 and 2016 (in thousands):



	Contract Operations		Aftermarket Services		Reportable Segments Total
Three Months Ended June 30, 2017:
Revenue from external customers	$	151,114	$	46,868	$	197,982
Gross margin	88,871		7,259		96,130
Three months ended June 30, 2016:
Revenue from external customers	$	162,973	$	41,172	$	204,145
Gross margin	104,107		6,819		110,926

Six Months Ended June 30, 2017:
Revenue from external customers	$	301,098	$	86,769	$	387,867
Gross margin	174,758		13,428		188,186
Six months ended June 30, 2016:
Revenue from external customers	$	339,212	$	78,228	$	417,440
Gross margin	212,167		13,513		225,680

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 June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Total gross margin	$	96,130		$	110,926		$	188,186		$	225,680
Less:
Selling, general and administrative	25,162			27,646			52,715			62,297
Depreciation and amortization	47,248			51,896			95,020			105,823
Long-lived asset impairment	5,508			13,808			13,753			23,668
Restatement and other charges	1,920			434			2,721			434
Restructuring and other charges	366			3,004			823			11,069
Interest expense	22,504			21,177			43,925			41,477
Debt extinguishment costs	—			—			291			—
Other income, net	(962		)	(181		)	(1,756		)	(2,170		)
Loss before income taxes	$	(5,616	)	$	(6,858	)	$	(19,306	)	$	(16,918	)