The amount of loan guarantee provided by related parties.

No definition available.

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Namespace Prefix:	kxin_
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Balance Type:	credit
Period Type:	duration

- Definition

Amount of non interest bearign promissory npte.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Repayment of loans to Renren Inc.

+ References

No definition available.

+ Details

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Namespace Prefix:	kxin_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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Period Type:	duration

- Definition

The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Details

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- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=kxin_NingboJiushengAutomobileSalesCo.Ltd.Member
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RELATED PARTY BALANCES AND TRANSACTIONS - Related party transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Proceeds of advances from related parties	$ 2,140	$ 115,035	$ 159,938
Renren And Its Subsidiaries [Member]
Related Party Transaction [Line Items]
Proceeds of advances from related parties	2,140	113,400
Loan guarantee provided by related parties		76,007
SVF
Related Party Transaction [Line Items]
Proceeds of advances from related parties		1,600
Promissory note to related party		2,614
Proceeds from Ordinary shares issued	4,213
Ningbo Jiusheng Automobile Sales Co., Ltd.
Related Party Transaction [Line Items]
Proceeds of advances from related parties	$ 666
Renren Inc.
Related Party Transaction [Line Items]
Repayment Of Loans To Renren Inc		$ 115,501