Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Summary of financial data by reportable segment

Certain financial data by reportable segment are summarized as follows (in thousands): 

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net revenues —
Well Intervention	$	161,759		$	113,076		$	291,328		$	187,697
Robotics	39,060			33,061			66,229			55,029
Production Facilities	16,343			15,210			32,664			31,585
Intercompany elimination	(12,537		)	(11,018		)	(21,334		)	(19,454		)
Total	$	204,625		$	150,329		$	368,887		$	254,857
Income (loss) from operations —
Well Intervention	$	34,470		$	19,032		$	48,347		$	20,450
Robotics	(4,102		)	(11,642		)	(18,419		)	(27,948		)
Production Facilities	6,866			6,140			14,225			13,064
Corporate and other	(12,684		)	(8,701		)	(20,940		)	(18,663		)
Intercompany elimination	222			221			443			442
Total	$	24,772		$	5,050		$	23,656		$	(12,655	)

Summary of intercompany segment revenues

Intercompany segment revenues are as follows (in thousands): 

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Well Intervention	$	4,215	$	2,895	$	6,167	$	4,268
Robotics	8,322		8,123		15,167		15,186
Total	$	12,537	$	11,018	$	21,334	$	19,454

Schedule of total assets by reportable segment

The following table reflects total assets by reportable segment (in thousands): 

	June 30, 2018		December 31, 2017
Well Intervention	$	1,885,738	$	1,830,733
Robotics	152,876		179,853
Production Facilities	127,099		138,292
Corporate and other	201,131		213,959
Total	$	2,366,844	$	2,362,837