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Principal Activities, Basis of Presentation, and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Useful Lives of Property Plant and Equipment Depreciation is recorded on a straight-line basis over useful lives that correspond to categories as follows:

 

Categories

 

Years

Information and communication equipment

 

2 to 5

Office furniture and equipment

 

3 to 6

Leasehold improvements

 

Shorter of 5 or lease term