Rendering

Component: (Network and Table)
Network
100320 - Disclosure - Property and Equipment - Summary of Property and Equipment (Detail)
(http://www.arrowheadresearch.com/20160930/taxonomy/role/DisclosurePropertyAndEquipmentSummaryOfPropertyAndEquipmentDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000879407 (http://www.sec.gov/CIK)
Property Plant And Equipment [Abstract]Period [Axis]
2016-09-30
2015-09-30
Property Plant And Equipment [Abstract]
 
 
Computers, office equipment and furniture
442,915  
404,964  
Research equipment
7,490,400  
6,354,584  
Software
80,841  
110,428  
Leasehold improvements
11,885,365  
3,117,537  
Total gross fixed assets
19,899,521  
 
9,987,513  
 
Less: Accumulated depreciation and amortization
(4,512,760) 
(5,460,665) 
Property and equipment, net
15,386,761  
 
4,526,848