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Acquisitions Acquisition (Purchase Price Allocation) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Aug. 18, 2021
Jul. 02, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 08, 2019
Aug. 23, 2019
Business acquisition              
Goodwill $ 278,810     $ 183,222 $ 183,465    
AnalogX, Inc.              
Business acquisition              
Cash and cash equivalents     $ 2,763        
Accounts receivable     280        
Unbilled receivables     1,566        
Prepaid expenses and other current assets     1,354        
Identified intangible assets     6,800        
IPR&D     3,800        
Goodwill     38,326        
Property, plant and equipment, net     118        
Accounts payable     (1,112)        
Deferred revenue     (23)        
Income taxes payable     (6,144)        
Other current liabilities     (215)        
Recognized identifiable assets acquired and liabilities assumed, net     $ 47,513        
PLDA Group              
Business acquisition              
Cash and cash equivalents   $ 5,820          
Accounts receivable   2,233          
Inventories   125          
Prepaid expenses and other current assets   836          
Operating lease right-of-use assets   864          
Identified intangible assets   21,400          
IPR&D   7,400          
Goodwill   57,543          
Property, plant and equipment, net   679          
Other asset   339          
Accounts payable   (1,046)          
Accrued salaries and benefits   (814)          
Deferred revenue   (514)          
Income taxes payable   (118)          
Operating lease liability   (852)          
Deferred tax liability, net   (8,180)          
Other current liabilities   (74)          
Recognized identifiable assets acquired and liabilities assumed, net   $ 85,641          
Northwest Logic              
Business acquisition              
Cash and cash equivalents             $ 159
Accounts receivable             1,679
Prepaid expenses and other current assets             65
Operating lease right-of-use assets             178
Identified intangible assets             8,800
Goodwill             13,477
Other asset             9
Accounts payable             (9)
Operating lease liability             (178)
Deferred tax liability, net             (2,133)
Other current liabilities             (108)
Recognized identifiable assets acquired and liabilities assumed, net             $ 21,939
Silicon IP and Business Protocols Business from Verimatrix              
Business acquisition              
Prepaid expenses and other current assets           $ 267  
Unbilled receivables           6,765  
Operating lease right-of-use assets           852  
Identified intangible assets           23,500  
Goodwill           16,845  
Deferred revenue           (310)  
Operating lease liability           (852)  
Other current liabilities           (267)  
Recognized identifiable assets acquired and liabilities assumed, net           $ 46,800