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Note 10 - Segment Information - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Revenues $ 2,151 $ 52,049
Revenues (2,151) (52,049)
Operating Segments [Member]    
Revenues 2,151 52,384
Revenues (2,151) (52,384)
Intersegment Eliminations [Member]    
Revenues (0) 335
Revenues $ 0 $ (335)