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Note 6 - Restructuring and Other Exit Costs - Restructuring and Other Exit Charges (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Restructuring and other exit costs $ 2,033 $ 1,354
Non-cash charges (168) (705)
Cash payments (1,945) (281)
Balance 368  
Balance 288 368
Cost of Revenues [Member]    
Restructuring and other exit costs 0 235
Non-cash charges 0 (235)
Cash payments 0 0
Balance 0  
Balance 0 0
Employee Severance [Member]    
Restructuring and other exit costs 1,625 530
Non-cash charges 0 0
Cash payments (1,719) (166)
Balance 364  
Balance 270 364
Impairment [Member]    
Restructuring and other exit costs 0 460
Non-cash charges 0 (460)
Cash payments 0 0
Balance 0  
Balance 0 0
Other Restructuring [Member]    
Restructuring and other exit costs 408 129
Non-cash charges (168) (10)
Cash payments (226) (115)
Balance 4  
Balance $ 18 $ 4