Commitment period for advances under Credit Facility.

No definition available.

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- Definition

Percentage of funds available under line of credit facility.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility, termination or prepayment fee, percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	nick_
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Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Definition

Unamortized Loss on Reacquired Debt is the loss incurred upon reacquisition or refinancing of debt, is treated as a deferred charge and amortized over the life of the new debt issued.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Period Type:	instant

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- Details

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- Details

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Balance Type:
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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Events (Detail Textuals) - USD ($)	Nov. 05, 2021	Dec. 31, 2021
Forecast
Subsequent Event [Line Items]
Unamortized debt origination cost		$ 1,900,000
Subsequent Event \| Senior Secured Credit Facility
Subsequent Event [Line Items]
Line of credit facility amount	$ 175,000,000
Commitment period for advances under Credit Facility	3 years
Subsequent Event \| Senior Secured Credit Facility \| Minimum
Subsequent Event [Line Items]
Credit facility, available funds, percentage	80.00%
Subsequent Event \| Senior Secured Credit Facility \| Maximum
Subsequent Event [Line Items]
Credit facility, available funds, percentage	85.00%
Subsequent Event \| Senior Secured Credit Facility \| Year One
Subsequent Event [Line Items]
Termination or prepayment fee, percentage	2.00%
Subsequent Event \| Senior Secured Credit Facility \| Year Two
Subsequent Event [Line Items]
Termination or prepayment fee, percentage	1.00%
Subsequent Event \| Senior Secured Credit Facility \| Thereafter
Subsequent Event [Line Items]
Termination or prepayment fee, percentage	0.50%
Subsequent Event \| Senior Secured Credit Facility \| Secured Overnight Financing Rate
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate	2.25%