Consolidated Statements of Operations (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Revenues
Commissions	$ 114,301,000	$ 78,168,000
Net dealer inventory gains	16,482,000	13,426,000
Investment banking	19,035,000	14,002,000
Investment advisory	14,161,000	9,508,000
Interest and dividends	3,541,000	3,935,000
Transfer fees and clearing services	8,676,000	7,740,000
Tax preparation and accounting	7,811,000
Other	285,000	804,000
Total Revenues	184,292,000	127,583,000
Operating Expenses
Commissions, compensation and fees	152,145,000	109,563,000
Clearing fees	3,701,000	2,840,000
Communications	4,772,000	4,494,000
Occupancy	4,056,000	2,070,000
Licenses and registration	1,620,000	1,483,000
Professional fees	4,099,000	2,642,000
Interest	33,000	248,000
Depreciation and amortization	1,136,000	926,000
Other administrative expenses	4,908,000	1,530,000
Total Operating Expenses	176,470,000	125,796,000
Income from Operations	7,822,000	1,787,000
Other Expense
Loss on investment in unaffiliated entity		(162,000)
Total Other expense		(162,000)
Income before income taxes	7,822,000	1,625,000
Income tax (benefit) expense (Note 13)	(10,821,000)	60,000
Net Income	18,643,000	1,562,000
Net loss attributable to non-controlling interest		3,000
NET INCOME ATTRIBUTABLE TO NATIONAL HOLDINGS CORPORATION	$ 18,643,000	$ 1,565,000
Net income per share of common stock attributable to National Holdings Corporation - Basic (in Dollars per share)	$ 0.15	$ 0.02
Net income per share of common stock attributable to National Holdings Corporation - Diluted (in Dollars per share)	$ 0.15	$ 0.02
Weighted average number of shares outstanding - Basic (in Shares)	123,026,480	70,651,415
Weighted average number of shares outstanding - Diluted (in Shares)	123,888,863	74,887,749