| Component: (Network and Table) | |
|---|---|
| Network | 100310 - Disclosure - Summary of Significant Accounting Policies (Tables) (http://www.geospace.com/20160930/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001001115 (http://www.sec.gov/CIK) |
| Accounting Policies [Abstract] | Period [Axis] | ||||||||||||||||||||||||||||||||||||||||||||||||||
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2015-10-01 - 2016-09-30 | |||||||||||||||||||||||||||||||||||||||||||||||||||
Accounting Policies [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||
Property, Plant and Equipment Estimated Useful Life | Property, plant and equipment and rental equipment are stated at cost. Depreciation expense is calculated using the straight-line method over the following estimated useful lives:
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Changes in Product Warranty Reserve | Changes in the product warranty reserve are reflected in the following table (in thousands):
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