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Note 9 - Restructuring and Other Exit Costs - Activity for Accrued Restructuring Liability (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Restructuring charges $ 1,354
Non-cash charges (705)
Cash payments (281)
Balance at December 31, 2019 368
Cost of Revenues [Member]  
Restructuring charges 235
Non-cash charges (235)
Cash payments
Balance at December 31, 2019
Employee Severance [Member]  
Restructuring charges 530
Non-cash charges
Cash payments (166)
Balance at December 31, 2019 364
Impairment [Member]  
Restructuring charges 460
Non-cash charges (460)
Cash payments
Balance at December 31, 2019
Other Restructuring [Member]  
Restructuring charges 129
Non-cash charges (10)
Cash payments (115)
Balance at December 31, 2019 $ 4