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Note 7 - Affiliates Balances (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

(In thousands)		June 30, 2021				December 31, 2020
Due from affiliates:
Angolan joint venture (Sonatide)		$	44,135			$	41,623
Nigeria joint venture (DTDW)			20,787				20,427
			64,922				62,050
Due to affiliates:
Sonatide		$	38,972			$	32,767
DTDW			20,787				20,427
			59,759				53,194
Net due from affiliates		$	5,163			$	8,856

Schedule of Amounts Due From Affiliate [Table Text Block]

		Six Months
		Ended
(In thousands)		June 30, 2021
Due from Sonatide at December 31, 2020		$	41,623
Revenue earned by the company through Sonatide			17,187
Less amounts received from Sonatide			(14,632	)
Other			(43	)
Total due from Sonatide at June 30, 2021		$	44,135

Schedule of Amoutns Due to Affiliate [Table Text Block]

		Six Months
		Ended
(In thousands)		June 30, 2021
Due to Sonatide at December 31, 2020		$	32,767
Plus additional commissions payable to Sonatide			1,596
Plus amounts paid by Sonatide on behalf of the company			4,331
Other			278
Total due to Sonatide at June 30, 2021		$	38,972

Equity Method Investments [Table Text Block]

		Three Months Ended								Six Months Ended
		June 30, 2021				June 30, 2020				June 30, 2021				June 30, 2020
Revenues of Angolan operations (in thousands)		$	9,075			$	12,289			$	18,367			$	24,426
Percent of consolidated vessel revenues			10	%			12	%			11	%			11	%
Number of company owned vessels in Angola			23				26				22				27
Number of stacked company owned vessels in Angola			5				9				6				10

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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