XML 20 R57.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 15 - Stock Based Compensation (Details) (USD $)
6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Note 15 - Stock Based Compensation (Details) [Line Items]    
Class of Warrant or Right, Outstanding (in Shares) 89,676us-gaap_ClassOfWarrantOrRightOutstanding  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share) $ 5.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1  
Expires June 2015 [Member]    
Note 15 - Stock Based Compensation (Details) [Line Items]    
Class of Warrant or Right, Outstanding (in Shares) 25,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
= nhld_ExpiresJune2015Member
 
Expires July 2015 [Member]    
Note 15 - Stock Based Compensation (Details) [Line Items]    
Class of Warrant or Right, Outstanding (in Shares) 64,676us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
= nhld_ExpiresJuly2015Member
 
Restricted Stock Units (RSUs) [Member]    
Note 15 - Stock Based Compensation (Details) [Line Items]    
Allocated Share-based Compensation Expense $ 109,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
$ 119,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) 109,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
 
Employee Stock Option [Member]    
Note 15 - Stock Based Compensation (Details) [Line Items]    
Allocated Share-based Compensation Expense 144,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
427,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 41,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember