Note 6 - Forgivable Loans Receivable (Details) (USD $)	12 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Note 6 - Forgivable Loans Receivable (Details) [Line Items]
Notes Receivable,Interest Range	9.00%nhld_NotesReceivableInterestRange
Forgiveness of Loans	$ 243,000nhld_ForgivenessOfLoans	$ 349,000nhld_ForgivenessOfLoans
Allowance for Doubtful Accounts Receivable	323,000	13,000
Other Receivables	3,998,000us-gaap_OtherReceivables	1,424,000us-gaap_OtherReceivables
Loans Receivable [Member]
Note 6 - Forgivable Loans Receivable (Details) [Line Items]
Allowance for Doubtful Accounts Receivable	0	0
Ended Affiliation [Member]
Note 6 - Forgivable Loans Receivable (Details) [Line Items]
Other Receivables	$ 0	$ 0

Forgiving loan is the intentional and voluntary process by which loan offered has been forgived or in process to be forgived.

No definition available.

+ Details

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Namespace Prefix:	nhld_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Period Type:	duration

- Definition

The specification of interest ranging for notes receivable which is comprised of unsecured non interest and interest bearing loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	nhld_
Data Type:	num:percentItemType
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- Definition

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Carrying amounts due as of the balance sheet date from parties or arising from transactions not otherwise specified in the taxonomy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 8

-Article 5

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- Details

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- Details

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