ACQUISITIONS: Components of Intangible Assets Acquired and Their Estimated Useful Lives as of Acquisition Date (Details) - USD ($) $ in Thousands	Feb. 17, 2021	Jul. 02, 2019
DataFleets, Ltd
Business Acquisition [Line Items]
Intangible assets	$ 11,400
DataFleets, Ltd | Developed technology
Business Acquisition [Line Items]
Intangible assets	$ 11,000
Amortization period	4 years
DataFleets, Ltd | Customer relationship/Trade name, gross
Business Acquisition [Line Items]
Intangible assets	$ 400
Amortization period	2 years
Data Plus Math Corporation
Business Acquisition [Line Items]
Intangible assets		$ 34,000
Data Plus Math Corporation | Developed technology
Business Acquisition [Line Items]
Intangible assets		$ 11,000
Amortization period		4 years
Data Plus Math Corporation | Customer relationships
Business Acquisition [Line Items]
Intangible assets		$ 6,000
Amortization period		4 years
Data Plus Math Corporation | Data supply relationships
Business Acquisition [Line Items]
Intangible assets		$ 16,000
Amortization period		4 years
Data Plus Math Corporation | Trademarks
Business Acquisition [Line Items]
Intangible assets		$ 1,000
Amortization period		2 years