XML 35 R55.htm IDEA: XBRL DOCUMENT
v3.20.1

GUARANTEE LIABILITIES - Summary of movement on liabilities from investor assurance program (Detail) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Guarantor Obligations [Line Items] |  |
Opening balance | ¥ 1,547,072 | ¥ 3,718,352
Liability arising from new business |  | 969,815
Release on expiration | (2,831) | (118,521)
Contingent liability accrued |  | 459,451
Ending balance |  | 1,547,072
Transfer out due to disposal of Shanghai Caiyin | (706,600) |
2015 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (15,999) | (792,923)
2016 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (229,470) | (754,557)
2017 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (274,845) | (1,410,157)
2018 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (321,387) | (520,328)
Current loan products |  |
Guarantor Obligations [Line Items] |  |
Opening balance | 575,109 | 827,703
Liability arising from new business |  | 968,732
Release on expiration | (1,648) | (27,021)
Contingent liability accrued |  | 103,964
Ending balance |  | 575,109
Transfer out due to disposal of Shanghai Caiyin | (71,323) |
Current loan products | 2016 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | 391 | 254
Current loan products | 2017 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (181,253) | (778,674)
Current loan products | 2018 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (321,276) | (519,849)
Other online standard loan products |  |
Guarantor Obligations [Line Items] |  |
Opening balance | 254,020 | 741,275
Liability arising from new business |  | 373
Release on expiration | (6) | (89,582)
Contingent liability accrued |  | 6,386
Ending balance |  | 254,020
Transfer out due to disposal of Shanghai Caiyin | (246,441) |
Other online standard loan products | 2016 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (431) | (4,412)
Other online standard loan products | 2017 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (7,140) | (399,874)
Other online standard loan products | 2018 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (2) | (146)
Offline and non-standard loan products |  |
Guarantor Obligations [Line Items] |  |
Opening balance | 722,003 | 2,149,374
Liability arising from new business |  | 710
Release on expiration | (1,177) | (1,918)
Contingent liability accrued |  | 349,101
Ending balance |  | 722,003
Transfer out due to disposal of Shanghai Caiyin | (388,836) |
Offline and non-standard loan products | 2015 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (15,999) | (792,923)
Offline and non-standard loan products | 2016 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (229,430) | (750,399)
Offline and non-standard loan products | 2017 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | (86,452) | (231,609)
Offline and non-standard loan products | 2018 |  |
Guarantor Obligations [Line Items] |  |
Net payouts for loans originated | ¥ (109) | ¥ (333)

X
- Definition Guarantee obligations transfer out due to disposal of a subsidiary + References No definition available. + Details
Name: | jfin_GuaranteeObligationsTransferOutDueToDisposalOfASubsidiary
Namespace Prefix: | jfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Guaranty liabilities arising from new business. + References No definition available. + Details
Name: | jfin_GuarantyLiabilitiesArisingFromNewBusiness
Namespace Prefix: | jfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Guaranty liabilities contingent liability accrued. + References No definition available. + Details
Name: | jfin_GuarantyLiabilitiesContingentLiabilityAccrued
Namespace Prefix: | jfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Guaranty liabilities net payouts for loans originated. + References No definition available. + Details
Name: | jfin_GuarantyLiabilitiesNetPayoutsForLoansOriginated
Namespace Prefix: | jfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Guaranty liabilities release on expiration. + References No definition available. + Details
Name: | jfin_GuarantyLiabilitiesReleaseOnExpiration
Namespace Prefix: | jfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | us-gaap_GuaranteeObligationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents a non-contingent liability for the fair value of an obligation to stand ready to perform over the term of a guaranty issued in the event that specified triggering events or conditions occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118943535&loc=d3e11019-110243 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118943535&loc=d3e11049-110243 + Details
Name: | us-gaap_GuarantyLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | jfin_LoanOriginationYearAxis=jfin_TwoThousandFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | jfin_LoanOriginationYearAxis=jfin_TwoThousandSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | jfin_LoanOriginationYearAxis=jfin_TwoThousandSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | jfin_LoanOriginationYearAxis=jfin_TwoThousandEighteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=jfin_CurrentLoanProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=jfin_OtherOnlineStandardLoanProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=jfin_OfflineAndNonstandardLoanProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |