Consolidated Balance Sheets - USD ($)	Sep. 30, 2017	Sep. 30, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 24,838,567	$ 85,366,448
Accounts receivable	67,797	75,000
Prepaid expenses	867,363	1,289,923
Other current assets	1,359,638	3,771,172
Short term investments	40,769,539
TOTAL CURRENT ASSETS	67,902,904	90,502,543
Property and equipment, net	15,513,019	15,386,761
Intangible assets, net	20,464,439	22,164,868
Other assets	141,918	122,333
TOTAL ASSETS	104,022,280	128,176,505
CURRENT LIABILITIES
Accounts payable	4,076,514	12,232,906
Accrued expenses	4,564,507	4,587,467
Accrued payroll and benefits	3,399,679	3,969,706
Deferred rent	440,580	440,580
Deferred revenue	5,269,741	2,569,792
Derivative liabilities	695,114	1,602,626
Note Payable	208,506	194,310
Other current liabilities	46,407	46,407
TOTAL CURRENT LIABILITIES	18,701,048	25,643,794
LONG-TERM LIABILITIES
Deferred rent, net of current portion	1,929,052	2,274,997
Deferred revenue, net of current portion		2,500,000
Note Payable, net of current portion	2,325,018	2,533,455
Other non-current liabilities	200,000	200,000
TOTAL LONG-TERM LIABILITIES	4,454,070	7,508,452
Commitments and contingencies (Note 7)
Arrowhead Pharmaceuticals, Inc. stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 0 and 15,652 shares issued and outstanding as of September 30, 2017 and September 30, 2016		16
Common stock, $0.001 par value; 145,000,000 shares authorized; 74,785,426 and 69,746,685 shares issued and outstanding as of September 30, 2017 and September 30, 2016, respectively	167,155	162,116
Additional paid-in capital	514,037,301	493,844,909
Accumulated other comprehensive income (loss)	33,232	7,449
Accumulated deficit	(432,815,338)	(398,435,043)
Total Arrowhead Pharmaceuticals, Inc. stockholders' equity	81,422,350	95,579,447
Noncontrolling interest	(555,188)	(555,188)
TOTAL STOCKHOLDERS’ EQUITY	80,867,162	95,024,259
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 104,022,280	$ 128,176,505

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.