INVESTMENT IN UNCONSOLIDATED COMPANIES (Tables)

12 Months Ended

Dec. 31, 2019

Equity Method Investments And Joint Ventures [Abstract]

Schedule of Investments in at Equity and Advances to Unconsolidated Companies

Investments in, at equity, and advances to unconsolidated joint venture companies were as follows:

	Percentage	December 31,		December 31,
(In thousands)	Ownership	2019		2018
Sonatide Marine, Ltd. (Angola)	49%	$	—	$	—
DTDW Holdings, Ltd. (Nigeria)	40%		—		1,033
GulfMark Marine, Ltd. (Trinidad)	49%		—		6
Investments in, at equity, and advances to    unconsolidated companies		$	—	$	1,039

Schedule of Balances with Unconsolidated Affiliates

We maintained the following balances with our unconsolidated affiliates as of December 31, 2019 and December 31, 2018:

	December 31,		December 31,
(in thousands)	2019		2018
Due from related parties:
Sonatide (Angola)	$	89,246		109,176
DTDW (Nigeria)		36,726		23,775
		125,972		132,951
Due to related parties:
Sonatide (Angola)	$	31,475		29,347
DTDW (Nigeria)		18,711		5,625
		50,186		34,972
Due from related parties, net of due to related parties	$	75,786		97,979

Schedule of Amounts Due from Affiliate

Amounts due from Sonatide

	Successor									Predecessor
							Period from			Period from
	Year			Year			August 1, 2017			April 1, 2017
	Ended			Ended			through			through
(In thousands)	December 31, 2019			December 31, 2018			December 31, 2017			July 31, 2017
Due from Sonatide at beginning of year	$	109,176		$	230,315			252,393			262,652
Revenue earned by the company through Sonatide		52,372			56,916			40,303			34,397
Less amounts received from Sonatide		(60,486	)		(76,878	)		(28,264	)		(21,019	)
Less amounts used to offset Due to Sonatide obligations (A)		(10,551	)		(78,993	)		(33,607	)		(21,453	)
Less impairment of due from affiliate		—			(20,083	)		—			—
Other		(1,265	)		(2,101	)		(510	)		(2,184	)
	$	89,246		$	109,176			230,315			252,393

(A) We reduced the respective due from affiliates and due to affiliates balances each period through netting transactions based on agreement with the joint venture.

Schedule of Amounts Due to Affiliate

Amounts due to Sonatide

	Successor									Predecessor
							Period from			Period from
							August 1, 2017			April 1, 2017
	Year Ended			Year Ended			through			through
	December 31,			December 31,			December 31,			July 31,
(In thousands)	2019			2018			2017			2017
Due to Sonatide at beginning of year	$	29,347		$	99,448			123,899			132,857
Plus commissions payable to Sonatide		4,937			5,502			3,928			3,330
Plus amounts paid by Sonatide on behalf of the company		9,654			14,778			12,044			9,458
Less commissions paid to Sonatide		(5,961	)		(13,906	)		(5,023	)		—
Less amounts used to offset Due from Sonatide obligations (A)		(10,551	)		(78,993	)		(33,607	)		(21,453	)
Other		4,049			2,518			(1,793	)		(293	)
	$	31,475		$	29,347		$	99,448			123,899

(A) We reduced the respective due from affiliates and due to affiliates balances each period through netting transactions based on agreement with the joint venture.