| Component: (Network and Table) | |
|---|---|
| Network | 100260 - Disclosure - Inventories (Tables) (http://www.ambarella.com/20170131/taxonomy/role/DisclosureInventoriesTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001280263 (http://www.sec.gov/CIK) |
| Inventory Disclosure [Abstract] | Period [Axis] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016-02-01 - 2017-01-31 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Inventory Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Inventory | Inventories at January 31, 2017 and 2016 consisted of the following:
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