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Note 6 - Business Combination and Goodwill - Fair Value of Assets Acquired and Liabilities Assumed in the Acquisition (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Jan. 01, 2022
Nov. 12, 2011
Nov. 11, 2011
Goodwill, Ending Balance $ 315,358 $ 315,358   $ 267,500
Accrued liabilities 5      
Mirametrix [Member]        
Cash and cash equivalents 437      
Accounts receivable 3,265      
Other current assets 262      
Property and equipment 156      
Intangible assets 24,800      
Goodwill, Ending Balance 47,844   $ 47,800  
Total assets acquired 76,764      
Accounts payable 21      
Accrued payroll obligations 247      
Long-term liabilities 7,955      
Total liabilities assumed 8,228      
Fair value of net assets acquired $ 68,536