XML 58 R48.htm IDEA: XBRL DOCUMENT
v3.23.3

Fair Value Disclosures (Detail Textuals) | 1 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2023
Contract Portfolio | Minimum |  |
Financial Instruments Not Measured At Fair Value [Line Items] |  |
Initial terms of finance receivables |  | 12 months
Contract Portfolio | Maximum |  |
Financial Instruments Not Measured At Fair Value [Line Items] |  |
Initial terms of finance receivables | 60 months | 72 months
Direct Loans | Minimum |  |
Financial Instruments Not Measured At Fair Value [Line Items] |  |
Initial terms of finance receivables |  | 12 months
Direct Loans | Maximum |  |
Financial Instruments Not Measured At Fair Value [Line Items] |  |
Initial terms of finance receivables |  | 60 months

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: | nick_FinancialInstrumentsNotMeasuredAtFairValueLineItems
Namespace Prefix: | nick_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents initial term of finance receivables. + References No definition available. + Details
Name: | nick_InitialTermsOfFinanceReceivables
Namespace Prefix: | nick_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_CustomerContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |