XML 19 R10.htm IDEA: XBRL DOCUMENT v3.20.4

Concentration and Risks	9 Months Ended
	Sep. 30, 2020
Risks and Uncertainties [Abstract]
Concentration and Risks	3. Concentration and Risks Financial instruments that potentially expose the Group to significant concentration of credit risk primarily consist of cash and cash equivalents, time deposits and short-term investments. As of September 30, 2020, substantially all of the Group’s cash and cash equivalents, time deposits and short-term investments were held in major financial institutions located in Mainland China and Hong Kong, which management considered being of high credit quality. There was no customer individually account for more than 10% of the total net revenues for the nine months ended September 30, 2019 and 2020, respectively. There was one instructor and two instructors, through whom the Company’s net learning services and products revenue earned was more than 10% of the Company’s net learning services and products revenue for the nine months ended September 30, 2019 and 2020, respectively.

X

- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

+ Details

Name:	us-gaap_ConcentrationRiskDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration