Quarterly report pursuant to Section 13 or 15(d)


9 Months Ended
Sep. 30, 2021
Receivables [Abstract]  
Receivables consist of the following:
September 30,
December 31,
Trade receivables $ 18,160  $ 16,616 
Notes receivables 32  — 
Other receivables 270  — 
Total receivables $ 18,462  $ 16,616 
Trade receivables represent amounts due to the Company from social and mobile platform operators, including Apple, Google, Amazon and Facebook. Trade receivables are recorded when the right to consideration becomes unconditional. No allowance for doubtful accounts was considered necessary as of September 30, 2021 and December 31, 2020.
Concentration of Credit Risk
As of September 30, 2021, Apple, Inc. and Google, Inc. accounted for 47.9% and 38.3% of the Company’s total receivables, respectively, while as of December 31, 2020, Apple, Inc. and Google, Inc. accounted for 48.9% and 42.7% of the Company’s total receivables, respectively. As of September 30, 2021 and December 31, 2020, the Company did not have any additional counterparties that exceeded 10% of the Company’s net accounts receivable.
As of September 30, 2021, 77.3% of the Company’s total notes receivables were concentrated in amounts due from game developers. Each of the counterparties within the concentrated group are engaged in game development services as their primary form of business, subjecting the group to similar activities and economic risks. In the event that the group fails completely to perform according to the terms of the notes, and any collateral applicable proved to be of no value, the maximum amount of loss which the Company may incur is approximately $3.8 million, all of which is reported within the Other long-term assets line item on the Condensed Consolidated Balance Sheets. Approximately 67.2% of the notes subject to risk are secured by certain intellectual property created, developed or acquired by the developers.