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v3.23.2

Variable Interest Entity (Detail Textuals) | 12 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Jul. 18, 2022 Branch Employees
Variable Interest Entity [Abstract] |  |
Number of branches close | Branch |  | 11
Number of employees | Employees |  | 44
Workforce Reduced | 16 |

X
- Definition Number of branches close + References No definition available. + Details
Name: | nick_NumberOfBranchesClose
Namespace Prefix: | nick_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Variable interest entity. + References No definition available. + Details
Name: | nick_VariableInterestEntityAbstract
Namespace Prefix: | nick_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Workforce reduced. + References No definition available. + Details
Name: | nick_WorkforceReduced
Namespace Prefix: | nick_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of employees eligible to participate in defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanNumberOfEmployees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant