(In thousands)	September 30, 2019		December 31, 2018
Due from related parties:
Sonatide (Angola)	$	91,801		109,176
DTDW (Nigeria)		32,956		23,775

Due to related parties:
Sonatide (Angola)	$	27,141		29,347
DTDW (Nigeria)		14,535		5,625

Due from related parties, net of due to related parties	$	83,081		97,979

Amounts due from Sonatide represent cash received by Sonatide from customers and due to us, amounts due from customers that are expected to be remitted to us by Sonatide and costs incurred by us on behalf of Sonatide.

	Nine Months
	Ended
(In thousands)	September 30, 2019
Due from Sonatide at December 31, 2018	$	109,176
Revenue earned by the company through Sonatide		41,184
Less amounts received from Sonatide		(45,393	)
Less amounts used to offset Due to Sonatide obligations (A)		(10,551	)
Other		(2,615	)
Total due from Sonatide at September 30, 2019	$	91,801

The amounts due from Sonatide is denominated in U.S. dollars; however, the underlying third-party customer payments to Sonatide were satisfied, in part, in Angolan kwanzas. We and Sonangol, our partner in Sonatide, have had discussions regarding how the net losses from the devaluation of certain Angolan kwanza denominated accounts should be shared.

After offsetting the amounts due to Sonatide, the net amount due from Sonatide at September 30, 2019 was approximately $64.7 million. Sonatide had approximately $52.2 million of cash on hand (approximately $14.4 million denominated in Angolan kwanzas) at September 30, 2019 plus approximately $18.4 million of net trade accounts receivable to satisfy the net due from Sonatide. Given prior discussions with our partner regarding how the net losses from the devaluation of certain Angolan kwanza denominated accounts should be shared, we continue to evaluate our net amount due from Sonatide balance for potential impairment based on available liquidity held by Sonatide.

Amounts due to Sonatide represent commissions payable and other costs paid by Sonatide on behalf of us.

	Nine Months
	Ended
(In thousands)	September 30, 2019
Due to Sonatide at December 31, 2018	$	29,347
Plus additional commissions payable to Sonatide		3,914
Plus amounts paid by Sonatide on behalf of the company		7,342
Less commissions paid to Sonatide during the period		(5,961	)
Less amounts used to offset Due from Sonatide obligations (A)		(10,551	)
Other		3,050
Total due to Sonatide at September 30, 2019	$	27,141

Sonatide’s principal earnings are from the commissions paid by us to the joint venture for company vessels chartered in Angola. In addition, Sonatide owns three vessels (one of which is currently stacked) that may generate operating income and cash flow.

Vessel revenues generated by our Angolan operations, percent of consolidated vessel revenues, average number of company owned vessels and average number of stacked company owned vessels of our Angolan operations for the periods indicated were as follows:

	Three Months Ended						Nine Months Ended
	September 30, 2019			September 30, 2018			September 30, 2019			September 30, 2018
Revenues of Angolan operations (in thousands)	$	11,534			15,154			41,194			43,874
Percent of consolidated vessel revenues		10	%		16	%		11	%		15	%
Number of company owned vessels in Angola		31			36			33			38
Number of stacked company owned vessels in Angola		14			16			14			16