Rendering

Component: (Network and Table)
Network
100630 - Disclosure - Income Taxes - Schedule of Reconciliation Between the Provision (Benefit) for Income Taxes at the Statutory Rate and the Effective Tax Rate (Detail)
(http://www.ambarella.com/20170131/taxonomy/role/DisclosureIncomeTaxesScheduleOfReconciliationBetweenProvisionBenefitForIncomeTaxesAtStatutoryRateAndEffectiveTaxRateDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001280263 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-02-01 - 2017-01-31
2015-02-01 - 2016-01-31
2014-02-01 - 2015-01-31
Income Tax Disclosure [Abstract]
 
 
 
Provision at U.S. notional statutory rate
20,700,000  
28,971,000  
17,692,000  
U.S. state taxes
(216,000) 
541,000  
90,000  
Non-U.S. foreign tax differential
(18,357,000) 
(26,253,000) 
(15,644,000) 
Stock-based compensation
1,605,000  
2,896,000  
1,601,000  
U.S. R&D credit
(2,226,000) 
(3,517,000) 
(2,298,000) 
Valuation allowance
1,901,000  
6,090,000  
0  
Other
(336,000) 
(27,000) 
24,000  
Provision for income taxes
3,071,000  
 
8,701,000  
 
1,465,000