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Note 13 - Segment and Geographic Distribution of Operations - Comparison of Total Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Total assets	$ 1,350,774	$ 1,579,528
Operating Segments [Member] | Americas [Member]
Total assets	343,792	375,297
Operating Segments [Member] | Middle East and Asia Pacific [Member]
Total assets	231,514	270,413
Operating Segments [Member] | Europe and Mediterranean [Member]
Total assets	312,651	358,943
Operating Segments [Member] | West Africa [Member]
Total assets	260,121	376,087
Corporate, Non-Segment [Member]
Total assets	$ 202,696	$ 198,788

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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