Rendering

Component: (Network and Table)
Network
100490 - Disclosure - Changes in Product Warranty Reserve (Details)
(http://www.geospace.com/20160930/taxonomy/role/DisclosureChangesInProductWarrantyReserveDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001001115 (http://www.sec.gov/CIK)
Accounting Policies [Abstract]Period [Axis]
2015-10-01 - 2016-09-30
2014-10-01 - 2015-09-30
2013-10-01 - 2014-09-30
Accounting Policies [Abstract]
 
 
 
Changes in product warranty reserve
 
 
 
Balance at the beginning of the year
2,326,000  
951,000  
1,952,000  
Accruals for warranties issued during the year
595,000  
4,984,000  
324,000  
Settlements made (in cash or in kind) during the year
(2,529,000) 
(3,609,000) 
(1,325,000) 
Balance at the end of the year
392,000  
 
2,326,000  
 
951,000