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Note 15 - Asset Dispositions, Assets Held for Sale and Asset Impairments - Activity in Assets Held for Sale (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Beginning balance 46 38 46 46
Beginning balance $ 29,064 $ 26,142 $ 39,287 $ 39,287
Additions 0 22 0 22
Additions $ 0 $ 15,931   $ 15,931
Sales (22) (14) (8) (44)
Sales $ (9,901) $ (7,408) $ (2,938) $ (20,247)
Additional impairment   $ (5,601) $ (10,207) $ (15,808)
Ending balance 24 46 38 24
Ending balance $ 19,163 $ 29,064 $ 26,142 $ 19,163