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Finance Receivables (Detail Textuals) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 28, 2019 | Mar. 31, 2021 | Mar. 31, 2020
Accounts Notes And Loans Receivable [Line Items] |  |  |
Criteria for receivable to be delinquent account |  | 121 days |
Direct Loans |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Average contractual interest rate |  | 29.70% | 28.20%
Percentage of direct loan to total loan portfolio |  | 8.00% |
Finance receivables | Contracts |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Average contractual interest rate |  | 23.40% | 23.40%
Minimum |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Criteria for receivable to be delinquent account | 121 days |  |
Minimum | Direct Loans |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Finance receivables, net |  | $ 1,000 |
Initial term of the direct finance receivables |  | 12 months |
Minimum | Finance receivables | Contracts |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Initial term of the indirect finance receivables |  | 12 months |
Maximum | Direct Loans |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Finance receivables, net |  | $ 15,000 |
Initial term of the direct finance receivables |  | 72 months |
Maximum | Finance receivables | Contracts |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Initial term of the indirect finance receivables |  | 60 months |

X
- Definition This element represents the number of days after which the receivable account is considered as delinquent account which will be written off. + References No definition available. + Details
Name: | nick_DelinquentAccountCriteriaPeriod
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Balance Type: | na
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- Definition Finance receivables average interest rate. + References No definition available. + Details
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Namespace Prefix: | nick_
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Balance Type: | na
Period Type: | instant

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- Definition This item represents the percentage of the direct loan in the total loan portfolio. + References No definition available. + Details
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Namespace Prefix: | nick_
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Balance Type: | na
Period Type: | instant

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- Definition This item represents initial term of direct finance receivables. + References No definition available. + Details
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- Definition This item represents initial term of indirect finance receivables. + References No definition available. + Details
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- 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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- Definition Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522 + Details
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- Details
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- Details
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- Details
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