Rendering

Component: (Network and Table)
Network
100600 - Disclosure - Income Taxes - Summary of Income before Income Taxes (Detail)
(http://www.ambarella.com/20170131/taxonomy/role/DisclosureIncomeTaxesSummaryOfIncomeBeforeIncomeTaxesDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001280263 (http://www.sec.gov/CIK)
Results Of Operations Income Before Income Taxes [Abstract]Period [Axis]
2016-02-01 - 2017-01-31
2015-02-01 - 2016-01-31
2014-02-01 - 2015-01-31
Results Of Operations Income Before Income Taxes [Abstract]
 
 
 
U.S. operations
3,092,000  
3,190,000  
1,978,000  
Non-U.S. operations
57,789,000  
82,019,000  
50,058,000  
Income before income taxes
60,881,000  
 
85,209,000  
 
52,036,000