XML 16 R33.htm IDEA: XBRL DOCUMENT v3.2.0.727

Interest Rate Swap Agreements - Summary of locations and amounts of gains (losses) in income (Details) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Periodic change in fair value of interest rate swap agreements	$ 43,562	$ 212,287
Periodic settlement differentials included in interest expense	94,953	98,992
Loss recognized in income	$ 138,515	$ 311,279

X

- Definition

Amount of periodic settlement differentials included in interest expense.

+ References

No definition available.

+ Details

Name:	nick_PeriodicSettlementsIncludedInInterestExpense
Namespace Prefix:	nick_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents pre tax income (loss) recognized in income.

+ References

No definition available.

+ Details

Name:	nick_PreTaxIncomeLossRecognizedInIncome
Namespace Prefix:	nick_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of unrealized gain (loss) included in earnings related to the fair value of the hedged item in an interest rate fair value hedge, offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 4C



-Subparagraph (a)



-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 4A



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

+ Details

Name:	us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration