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ACQUISITIONS: Components of intangible assets acquired and their estimated useful lives as of the acquisition date (Details) - USD ($)
$ in Thousands
Feb. 17, 2021
Jul. 02, 2019
DataFleets, Ltd    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 11,400  
DataFleets, Ltd | Developed technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 11,000  
Amortization period 4 years  
DataFleets, Ltd | Customer relationships/trade names    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 400  
Amortization period 2 years  
Data Plus Math Corporation    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   $ 34,000
Data Plus Math Corporation | Developed technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   $ 11,000
Amortization period   4 years
Data Plus Math Corporation | Customer relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   $ 6,000
Amortization period   4 years
Data Plus Math Corporation | Data supply relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   $ 16,000
Amortization period   4 years
Data Plus Math Corporation | Trademarks    
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets   $ 1,000
Amortization period   2 years