Revenue (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue from External Customers by Products and Services

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

			Three Months Ended
(in thousands)			Mar 31, 2019		Mar 31, 2018		Dec 31, 2018
Business Segment:
	Energy Services and Products
		Remotely Operated Vehicles	$	100,346	$	85,594	$	96,736
		Subsea Products	128,844		126,688		129,509
		Subsea Projects	89,728		56,860		89,295
		Asset Integrity	60,689		61,288		62,830
	Total Energy Services and Products		379,607		330,430		378,370
	Advanced Technologies		114,279		85,983		116,725
		Total	$	493,886	$	416,413	$	495,095

Revenue from External Customers by Geographic Areas

(in thousands)
Geographic Operating Areas:			Three Months Ended
	Foreign:		Mar 31, 2019		Mar 31, 2018		Dec 31, 2018
		Africa	$	87,106	$	55,087	$	71,237
		United Kingdom	53,298		45,319		50,304
		Norway	42,466		39,042		42,731
		Asia and Australia	41,426		38,946		41,685
		Brazil	17,763		18,828		17,161
		Other	21,222		19,639		23,200
	Total Foreign		263,281		216,861		246,318
	United States		230,605		199,552		248,777
Total			$	493,886	$	416,413	$	495,095

Revenue by Timing of Transfer of Goods or Services

Timing of Transfer of Goods or Services:
	Revenue recognized over time	$	461,245	$	374,667	$	465,008
	Revenue recognized at a point in time	32,641		41,746		30,087
Total		$	493,886	$	416,413	$	495,095