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Note 2 - Discontinued Operations and Held-for-sale (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2021
Sep. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Feb. 02, 2022
Equity Method Investment, Other than Temporary Impairment           $ 9,600    
Operating Lease, Right-of-Use Asset   $ 49,312     $ 49,312 52,987    
Gain (Loss) on Disposition of Assets, Total   19,800     33,781 4,925 $ 13,373  
Operating Lease, Liability, Noncurrent   32,928     32,928 $ 39,816    
Sale-leaseback Associated with Two Properties in California [Member]                
Sale Leaseback Transaction, Net Book Value, Total $ 11,100 3,100     3,100      
Operating Lease, Right-of-Use Asset 2,400 1,400     1,400      
Gain (Loss) on Disposition of Assets, Total $ 29,700              
Operating Lease, Liability, Noncurrent   $ 1,400     $ 1,400      
Water and Mineral Services Group Materials [Member]                
Goodwill, Impairment Loss       $ 14,800        
WMS Water [Member]                
Goodwill, Impairment Loss     $ 117,900          
WMS Materials [Member]                
Goodwill, Impairment Loss     $ 14,400          
Inliner [Member] | Subsequent Event [Member]                
Disposal Group, Including Discontinued Operation, Consideration               $ 159,700