Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Revenues and Identifiable Assets by Country Based on the Location of the Service Provided

The following table presents revenues and identifiable assets by country based on the location of the service provided:

	Revenues for Year Ended December 31,								Identifiable Assets as of December 31,
	2019		2018			2017			2019		2018
Australia	$	33,623	$	—		$	12,262		$	244,244	$	243,388
Brazil	—		—			—			8,910		13,299
Brunei	—		3,080			45,450			—		—
Bulgaria	61,525		84,757			55,145			—		645,689
Canada	46,147		47,085			1,639			199,696		219,421
Curacao	—		—			—			75,776		82,521
Denmark	31,076		35,855			44,671			238,413		242,831
East Timor	—		33,733			—			—		—
Egypt	49,209		112,473			—			—		689,965
Gabon	—		—			—			4,160		8,065
Guyana	132,414		50,839			—			1,807,296		1,250,390
Malaysia	251,497		91,052			131,696			30,012		665,822
Mexico	—		—			—			28,032		27,542
Myanmar	56,207		16,572			—			151,116		152,629
Qatar	36,948		35,180			16,488			219,569		478,708
Saudi Arabia	154,807		156,989			140,453			673,884		380,421
Singapore	—		1,769			—			—		125,574
South Africa	—		—			48,228			—		—
Suriname	17,374		(3		)	13,034			599,659		—
Tanzania	—		381			1,526			—		—
Turkey	—		—			(3		)	—		—
United Arab Emirates	—		(17		)	99,825			31,150		45,205
United Kingdom	243,063		194,602			209,338			1,373,524		1,152,596
United States	191,548		218,479			417,163			2,599,057		2,840,857
Total	$	1,305,438	$	1,082,826		$	1,236,915		$	8,284,498	$	9,264,923