(In thousands)	June 30, 2020		December 31, 2019
Due from related parties:
Sonatide (Angola)	$	47,353	$	89,246
DTDW (Nigeria)		18,413		36,726
		65,766		125,972
Due to related parties:
Sonatide (Angola)	$	30,390	$	31,475
DTDW (Nigeria)		18,413		18,711
		48,803		50,186
Due from related parties, net of due to related parties	$	16,963	$	75,786

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.

		Six Months
		Ended
(In thousands)		June 30, 2020
Due from Sonatide at December 31, 2019	$		89,246
Revenue earned by the company through Sonatide			23,910
Less amounts received from Sonatide			(16,501	)
Less amounts used to offset due to Sonatide obligations (A)			(8,145	)
Affiliate credit loss impairment expense			(41,500	)
Other			343
Total due from Sonatide at June 30, 2020	$		47,353

The amounts due from Sonatide are denominated in U.S. dollars; however, the underlying third-party customer payments to Sonatide were satisfied, in part, in Angolan kwanzas. In late 2019, we were informed that, as part of a broad privatization program, Sonangol, our partner in Sonatide, intends to seek to divest itself from the Sonatide joint venture.

In the second quarter of 2020 Sonatide declared a $35.0 million dividend. On June 22, 2020, Sonangol received $17.9 million and we received $17.1 million. All of our share of the dividend is reflected as dividend income from unconsolidated company in the consolidated statement of operations because (i) our investment in the Sonatide joint venture had previously been written down to zero, (ii) the distributions are not refundable and (iii) we are not liable for the obligations of or committed to provide financial support to the Sonatide joint venture. In addition, as a result of the aforementioned dividend payment, the cash balances of the joint venture were significantly reduced and we determined that, as a result, a significant portion of our net due from Sonatide balance was compromised.

After offsetting the amounts due to Sonatide, the net amount due from Sonatide at June 30, 2020 was approximately $17.0 million. Sonatide had approximately $6.9 million of cash on hand (approximately $1.2 million denominated in Angolan kwanzas) at June 30, 2020 plus approximately $18.6 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 due from Sonatide balance for possible additional impairment in future periods based in part on available liquidity held by Sonatide. On June 30, 2020, we recorded a $41.5 million credit loss impairment expense.

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

		Six Months
		Ended
(In thousands)		June 30, 2020
Due to Sonatide at December 31, 2019	$		31,475
Plus additional commissions payable to Sonatide			2,265
Plus amounts paid by Sonatide on behalf of the company			4,843
Less amounts used to offset due from Sonatide obligations (A)			(8,145	)
Other			(48	)
Total due to Sonatide at June 30, 2020	$		30,390

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 two vessels 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						Six Months Ended
	June 30, 2020			June 30, 2019			June 30, 2020			June 30, 2019
Revenues of Angolan operations (in thousands)	$	12,289		$	14,272		$	24,426		$	29,670
Percent of consolidated vessel revenues		12	%		12	%		11	%		12	%
Number of company owned vessels in Angola		26			32			27			34
Number of stacked company owned vessels in Angola		9			13			10			14

We own 40% of the DTDW joint venture in Nigeria. Our partner, who owns 60%, is a Nigerian national. DTDW owns one offshore service vessel and has long term debt of $5.6 million which is secured by the vessel and guarantees from the DTDW partners. We also operate company owned vessels in Nigeria for which our partner receives a commission. As of

June 30, 2020, we had only one company owned vessel operating in Nigeria and the DTDW owned vessel was not employed. At the beginning of 2020 we had expected that we would be operating numerous vessels in Nigeria, but in the second quarter of 2020 the Covid pandemic and resulting oil price reduction caused our primary customer in Nigeria to eliminate all planned operations for 2020. As a result, the near term cash flow projections indicate that DTDW does not have sufficient funds to meet its obligations to us or to the holder of its long term debt. In the June 2020 DTDW board meeting neither of the DTDW partners indicated willingness to contribute additional funds to DTDW to meet its obligations. Therefore, we have recorded affiliate credit loss impairment expense for the entire net due from DTDW balance as of June 30, 2020 totaling $12.1 million. In addition, based on our analysis we have determined that DTDW will be unable to pay its debt obligation and the debt will not be satisfied by liquidating the vessel and, as a result, we recorded additional impairment expense of $2.0 million for our expected share of the obligation guarantee.