Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES OF CONTINUING OPERATIONS:
Net loss	$ (36,294,880)	$ (17,898,373)
Net (gain) loss attributable to non-controlling interests	95,132	447,268
Net income (loss) attributable to Arrowhead	(36,199,748)	(17,451,105)
(Income) loss from discontinued operations		354
(Gain) loss on disposal of fixed assets	58,878	76,388
Change in value of derivatives	5,712,335	(215,620)
Stock-based compensation	3,758,264	1,114,375
Depreciation and amortization	1,075,238	1,352,448
Amortization (accretion) of note discounts, net	416,292	82,341
Non-cash gain in equity investment	(87,197)
Non-cash impairment expense		2,315,721
Non-controlling interest	(95,132)	(447,268)
Changes in operating assets and liabilities:
Receivables	75,000	9,375
Other receivables	(517,986)	1,080
Prepaid expenses	(127,248)	(441,373)
Other assets	(11,402)	(1,813)
Accounts payable	990,929	183,959
Accrued expenses	459,690	95,132
Other liabilities	(4,480)	(313,354)
NET CASH USED IN OPERATING ACTIVITIES OF CONTINUING OPERATIONS	(24,496,567)	(13,639,360)
CASH FLOWS FROM INVESTING ACTIVITIES OF CONTINUING OPERATIONS:
Purchases of property and equipment	(1,251,987)	(191,656)
Proceeds from sale of fixed assets		89,505
Purchase of marketable securities	(46,365,528)	(4,058,003)
Proceeds from sale of marketable securities	6,590,824	1,160,181
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES OF CONTINUING OPERATIONS	(41,026,691)	(2,999,973)
CASH FLOWS FROM FINANCING ACTIVITIES OF CONTINUING OPERATIONS:
Principal payments on capital leases	(257,178)	(160,495)
Proceeds from issuance of common stock and preferred stock, net	172,641,720	42,448,824
Proceeds from the exercise of warrants and stock options	12,374,005
NET CASH PROVIDED BY FINANCING ACTIVITIES OF CONTINUING OPERATIONS	184,758,547	42,288,329
Cash flows from discontinued operations:
Operating cash flows		(354)
Investing cash flows
Financing cash flows
Net cash provided by (used in) discontinued operations:		(354)
NET INCREASE IN CASH	119,235,289	25,648,642
CASH AT BEGINNING OF PERIOD	19,114,444	3,377,288
CASH AT END OF PERIOD	138,349,733	29,025,930
Supplementary disclosures:
Interest paid	$ 21,478	$ 32,139