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Finance receivables held for sale consist of Contracts and Direct Loans (Details) $ in Thousands | 9 Months Ended
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Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Finance receivables held for sale at amortized cost | $ 69,763
Held for sale allowance | 19,457
Finance receivables held for sale at fair value | $ 50,306

X
- Definition Finance receivables held for sale at amortized cost + References No definition available. + Details
Name: | nick_FinanceReceivablesHeldForSaleAtAmortizedCost
Namespace Prefix: | nick_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Finance receivables held for sale at fair value + References No definition available. + Details
Name: | nick_FinanceReceivablesHeldForSaleAtFairValue
Namespace Prefix: | nick_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Held for sale allowance + References No definition available. + Details
Name: | nick_HeldForSaleAllowance
Namespace Prefix: | nick_
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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration