Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Revenue [Abstract]

Revenue from External Customers by Products and Services [Table Text Block]

The following table presents Revenue disaggregated by business segment, geographical region, and timing of transfer of goods or services.

			Year Ended December 31,
(in thousands)			2018		2017		2016
Business Segment:
	Energy Services and Products
		Remotely Operated Vehicles	$	394,801	$	393,655	$	522,121
		Subsea Products	515,000		625,513		692,030
		Subsea Projects	329,163		291,993		472,979
		Asset Integrity	253,886		236,778		275,397
	Total Energy Services and Products		1,492,850		1,547,939		1,962,527
	Advanced Technologies		416,632		373,568		309,076
		Total	$	1,909,482	$	1,921,507	$	2,271,603

The following schedule shows our revenue, costs and gross margins by services and products:

	Year Ended December 31,
(in thousands)	2018			2017			2016
Revenue:
Services	$	1,245,927		$	1,181,229		$	1,509,786
Products	663,555			740,278			761,817
Total revenue	1,909,482			1,921,507			2,271,603
Cost of Services and Products:
Services	1,135,084			1,040,817			1,330,218
Products	578,212			625,843			615,438
Unallocated expenses	66,960			60,237			46,720
Total cost of services and products	1,780,256			1,726,897			1,992,376
Gross margin:
Services	110,843			140,412			179,568
Products	85,343			114,435			146,379
Unallocated expenses	(66,960		)	(60,237		)	(46,720		)
Total gross margin	$	129,226		$	194,610		$	279,227

Revenue from External Customers by Geographic Areas [Table Text Block]

Geographic Operating Areas:
	Foreign:
		Africa	$	239,959	$	256,198	$	486,615
		United Kingdom	203,391		236,177		304,635
		Norway	185,552		178,712		166,180
		Asia and Australia	163,843		193,865		196,679
		Brazil	64,004		42,607		73,280
		Other	103,548		81,364		66,870
	Total Foreign		960,297		988,923		1,294,259
	United States		949,185		932,584		977,344
Total			$	1,909,482	$	1,921,507	$	2,271,603

Revenue by Timing of Transfer of Goods or Services [Table Text Block]

		Dec 31, 2018
Timing of Transfer of Goods or Services:
	Revenue recognized over time	$	1,762,103
	Revenue recognized at a point in time	147,379
Total		$	1,909,482