The Company and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Useful Lives of Property and Equipment Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows:
Leasehold improvements
3–10 years
Computer hardware
3–5 years
Computer software3 years
Furniture and fixtures7 years
Other
3–5 years
Summary of Components and Original Estimated Economic Lives of Amortizable Intangible Assets
The components and original estimated economic lives of our amortizable intangible assets were as follows as of December 31, 2020 and 2019:
Original
Estimated
Economic Life		20202019
(Dollars in thousands)
Gross amortizable intangible assets:
Customer and publisher relationships10 years$14,780 $14,780 
Technology5 years2,330 2,330 
Trademark5 years300 300 
Total gross amortizable intangible assets17,410 17,410 
Accumulated amortization:
Customer and publisher relationships(8,425)(6,809)
Technology(2,305)(1,933)
Trademark(300)(257)
Total accumulated amortization(11,030)(8,999)
Amortizable intangible assets, net$6,380 $8,411 
Schedule of Change in Goodwill
The change in goodwill for both of our segments is as follows for the years ended December 31, 2020 and 2019 (in thousands):
Software & ServicesPortal & AdvertisingTotal
Balance as of January 1, 2019$11,797 $4,144 $15,941 
Balance as of Effect of foreign currency translation7 — 7 
Balance as of December 31, 2019$11,804 $4,144 $15,948 
Effect of foreign currency translation4 — 4 
Balance as of December 31, 2020$11,808 $4,144 $15,952 
Schedule of Concentrations Equal to or Exceeding 10% of Company's Accounts Receivable, Revenue, and Cost of Revenue As of December 31, 2020 and 2019, the Company had concentrations equal to or exceeding 10% of the Company’s accounts receivable as follows:
Accounts Receivable
20202019
Portal & Advertising Customer A*14 %
* - Less than 10%
For the years ended December 31, 2020 and 2019, the Company had concentrations equal to or exceeding 10% of the Company’s revenue as follows: 
Revenue
20202019
Portal & Advertising Customer A*13 %
* - Less than 10%
For the years ended December 31, 2020 and 2019, the following customers received revenue-share payments equal to or exceeding 10% of the Company’s cost of revenue.
Cost of Revenue
20202019
Portal & Advertising Customer B*19 %
* - Less than 10%