2018 Form 10-K Financial Statement
#000156459018007226 Filed on March 30, 2018
Income Statement
Concept | 2018 | 2017 Q1 | 2017 |
---|---|---|---|
Revenue | $295.4M | $87.50M | $310.3M |
YoY Change | -4.8% | 28.68% | -1.92% |
Cost Of Revenue | $107.7M | $29.00M | $105.3M |
YoY Change | 2.27% | 17.41% | -5.18% |
Gross Profit | $187.7M | $58.50M | $205.0M |
YoY Change | -8.43% | 35.1% | -0.16% |
Gross Profit Margin | 63.55% | 66.86% | 66.07% |
Selling, General & Admin | $47.80M | $11.30M | $43.40M |
YoY Change | 10.14% | 4.63% | 15.0% |
% of Gross Profit | 25.46% | 19.32% | 21.17% |
Research & Development | $115.5M | $27.10M | $101.2M |
YoY Change | 14.13% | 15.81% | 22.04% |
% of Gross Profit | 61.52% | 46.32% | 49.36% |
Depreciation & Amortization | $1.800M | $400.0K | $1.585M |
YoY Change | 13.56% | 0.0% | -1.31% |
% of Gross Profit | 0.96% | 0.68% | 0.77% |
Operating Expenses | $163.3M | $38.40M | $144.6M |
YoY Change | 12.93% | 12.28% | 19.84% |
Operating Profit | $24.43M | $20.10M | $60.36M |
YoY Change | -59.53% | 120.88% | -28.72% |
Interest Expense | |||
YoY Change | |||
% of Operating Profit | |||
Other Income/Expense, Net | $1.298M | $200.0K | $518.0K |
YoY Change | 150.58% | 0.0% | -2.26% |
Pretax Income | $25.73M | $20.30M | $60.88M |
YoY Change | -57.74% | 118.28% | -28.55% |
Income Tax | $6.877M | $1.900M | $3.071M |
% Of Pretax Income | 26.73% | 9.36% | 5.04% |
Net Earnings | $18.85M | $18.40M | $57.81M |
YoY Change | -67.39% | 260.78% | -24.44% |
Net Earnings / Revenue | 6.38% | 21.03% | 18.63% |
Basic Earnings Per Share | $0.57 | $1.77 | |
Diluted Earnings Per Share | $0.55 | $531.8K | $1.68 |
COMMON SHARES | |||
Basic Shares Outstanding | 33.22M | 32.67M | |
Diluted Shares Outstanding | 34.58M | 34.33M |
Balance Sheet
Concept | 2018 | 2017 Q1 | 2017 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | $434.6M | $405.4M | $405.4M |
YoY Change | 7.2% | 31.67% | 31.67% |
Cash & Equivalents | $346.7M | $322.9M | $322.9M |
Short-Term Investments | $87.90M | $82.50M | $82.50M |
Other Short-Term Assets | $4.000M | $4.400M | $4.400M |
YoY Change | -9.09% | 4.76% | 4.76% |
Inventory | $23.40M | $20.10M | $20.10M |
Prepaid Expenses | |||
Receivables | $31.30M | $38.60M | $38.60M |
Other Receivables | $0.00 | $0.00 | $0.00 |
Total Short-Term Assets | $493.3M | $468.5M | $468.5M |
YoY Change | 5.29% | 26.74% | 26.76% |
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $6.400M | $5.000M | $5.000M |
YoY Change | 28.0% | 45.01% | 47.06% |
Goodwill | $26.60M | ||
YoY Change | 0.0% | ||
Intangibles | $4.149M | ||
YoY Change | -0.69% | ||
Long-Term Investments | |||
YoY Change | |||
Other Assets | $5.900M | $2.224M | $8.000M |
YoY Change | -26.25% | 5.05% | 19.4% |
Total Long-Term Assets | $53.30M | $43.77M | $43.80M |
YoY Change | 21.69% | 6.84% | 6.83% |
TOTAL ASSETS | |||
Total Short-Term Assets | $493.3M | $468.5M | $468.5M |
Total Long-Term Assets | $53.30M | $43.77M | $43.80M |
Total Assets | $546.6M | $512.3M | $512.3M |
YoY Change | 6.7% | 24.76% | 24.77% |
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $19.80M | $19.96M | $20.00M |
YoY Change | -1.0% | 40.78% | 40.85% |
Accrued Expenses | $32.20M | $26.45M | $26.40M |
YoY Change | 21.97% | 11.23% | 10.92% |
Deferred Revenue | |||
YoY Change | |||
Short-Term Debt | $0.00 | $0.00 | $0.00 |
YoY Change | |||
Long-Term Debt Due | |||
YoY Change | |||
Total Short-Term Liabilities | $53.20M | $54.40M | $54.40M |
YoY Change | -2.21% | 11.44% | 11.48% |
LONG-TERM LIABILITIES | |||
Long-Term Debt | $0.00 | $0.00 | $0.00 |
YoY Change | |||
Other Long-Term Liabilities | $9.900M | $3.200M | $3.200M |
YoY Change | 209.38% | -74.07% | -73.98% |
Total Long-Term Liabilities | $9.900M | $3.200M | $3.200M |
YoY Change | 209.38% | -74.07% | -73.98% |
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $53.20M | $54.40M | $54.40M |
Total Long-Term Liabilities | $9.900M | $3.200M | $3.200M |
Total Liabilities | $64.50M | $57.60M | $57.60M |
YoY Change | 11.98% | -5.82% | -5.88% |
SHAREHOLDERS EQUITY | |||
Retained Earnings | |||
YoY Change | |||
Common Stock | |||
YoY Change | |||
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | |||
YoY Change | |||
Treasury Stock Shares | |||
Shareholders Equity | $482.2M | $454.6M | $454.6M |
YoY Change | |||
Total Liabilities & Shareholders Equity | $546.6M | $512.3M | $512.3M |
YoY Change | 6.7% | 24.76% | 24.77% |
Cashflow Statement
Concept | 2018 | 2017 Q1 | 2017 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | $18.85M | $18.40M | $57.81M |
YoY Change | -67.39% | 260.78% | -24.44% |
Depreciation, Depletion And Amortization | $1.800M | $400.0K | $1.585M |
YoY Change | 13.56% | 0.0% | -1.31% |
Cash From Operating Activities | $85.40M | $32.30M | $113.3M |
YoY Change | -24.63% | 6.25% | -8.32% |
INVESTING ACTIVITIES | |||
Capital Expenditures | $3.687M | -$600.0K | $2.701M |
YoY Change | 36.5% | -25.0% | 29.54% |
Acquisitions | $0.00 | $0.00 | |
YoY Change | -100.0% | ||
Other Investing Activities | -$5.900M | -$24.00M | -$43.00M |
YoY Change | -86.28% | -8100.0% | 31.5% |
Cash From Investing Activities | -$9.600M | -$24.60M | -$45.73M |
YoY Change | -79.01% | 4820.0% | 31.42% |
FINANCING ACTIVITIES | |||
Cash Dividend Paid | |||
YoY Change | |||
Common Stock Issuance & Retirement, Net | $54.79M | $20.18M | |
YoY Change | 171.46% | ||
Debt Paid & Issued, Net | |||
YoY Change | |||
Cash From Financing Activities | -52.00M | 1.800M | -12.76M |
YoY Change | 307.42% | 0.0% | -241.82% |
NET CHANGE | |||
Cash From Operating Activities | 85.40M | 32.30M | 113.3M |
Cash From Investing Activities | -9.600M | -24.60M | -45.73M |
Cash From Financing Activities | -52.00M | 1.800M | -12.76M |
Net Change In Cash | 23.80M | 9.500M | 54.82M |
YoY Change | -56.58% | -70.03% | -43.95% |
FREE CASH FLOW | |||
Cash From Operating Activities | $85.40M | $32.30M | $113.3M |
Capital Expenditures | $3.687M | -$600.0K | $2.701M |
Free Cash Flow | $81.72M | $32.90M | $110.6M |
YoY Change | -26.12% | 5.45% | -8.97% |
Facts In Submission
Frame | Concept Type | Concept / XBRL Key | Value | Unit |
---|---|---|---|---|
CY2018Q1 | us-gaap |
Goodwill
Goodwill
|
26601000 | |
CY2017Q1 | us-gaap |
Goodwill
Goodwill
|
26601000 | |
CY2018Q1 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
2257000 | |
CY2018Q1 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
19815000 | |
CY2018Q1 | us-gaap |
Assets
Assets
|
546649000 | |
CY2018Q1 | amba |
Accrued And Other Liabilities Current
AccruedAndOtherLiabilitiesCurrent
|
32178000 | |
CY2017Q1 | amba |
Accrued And Other Liabilities Current
AccruedAndOtherLiabilitiesCurrent
|
26448000 | |
CY2018Q1 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
4006000 | |
CY2018Q1 | us-gaap |
Assets Current
AssetsCurrent
|
493283000 | |
CY2018Q1 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
6449000 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Net Noncurrent
DeferredTaxAssetsNetNoncurrent
|
3642000 | |
CY2018Q1 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
14417000 | |
CY2018Q1 | us-gaap |
Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
|
936000 | |
CY2018Q1 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-279000 | |
CY2018Q1 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
261265000 | |
CY2018Q1 | us-gaap |
Stockholders Equity
StockholdersEquity
|
482187000 | |
CY2018Q1 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
546649000 | |
CY2018Q1 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.00045 | |
CY2018Q1 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
20000000 | |
CY2018Q1 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | |
CY2018Q1 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | |
CY2018Q1 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.00045 | |
CY2018Q1 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
200000000 | |
CY2018Q1 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
33489614 | |
CY2018Q1 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
33489614 | |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
57747000 | |
CY2016 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
76502000 | |
CY2016 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-6000 | |
CY2017Q1 | us-gaap |
Assets
Assets
|
512271000 | |
CY2017Q1 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
19955000 | |
CY2017Q1 | us-gaap |
Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
|
568000 | |
CY2017Q1 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
4149000 | |
CY2017Q1 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
2224000 | |
CY2016 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
2.42 | |
CY2017 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.68 | |
CY2016 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
2.27 | |
CY2017 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
32671221 | |
CY2017 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.77 | |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
60881000 | |
CY2016 | us-gaap |
Net Income Loss
NetIncomeLoss
|
76508000 | |
CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
60363000 | |
CY2017 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
518000 | |
CY2016 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
530000 | |
CY2016 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
85209000 | |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
3071000 | |
CY2016 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
8701000 | |
CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
57810000 | |
CY2016 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
31633936 | |
CY2017 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
34327724 | |
CY2016 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
33755709 | |
CY2017 | us-gaap |
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
|
-63000 | |
CY2016 | us-gaap |
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
|
-6000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-63000 | |
CY2016 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
31094000 | |
CY2016 | us-gaap |
Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net
AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
|
-3627000 | |
CY2018 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
56861000 | |
CY2016 | us-gaap |
Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
|
-525000 | |
CY2018Q1 | us-gaap |
Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
|
101986000 | |
CY2018 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
56861000 | |
CY2017 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
48832000 | |
CY2016 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
31094000 | |
CY2018 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-164000 | |
CY2017 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-83000 | |
CY2016 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-155000 | |
CY2018 | us-gaap |
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
|
-209000 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-209000 | |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
18643000 | |
CY2015Q1 | us-gaap |
Stockholders Equity
StockholdersEquity
|
237211000 | |
CY2016 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
5176000 | |
CY2016 | us-gaap |
Stock Issued During Period Value Restricted Stock Award Gross
StockIssuedDuringPeriodValueRestrictedStockAwardGross
|
0 | |
CY2016 | amba |
Stock Issued During Period Value Restricted Stock Units
StockIssuedDuringPeriodValueRestrictedStockUnits
|
0 | |
CY2016 | us-gaap |
Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
|
3100000 | |
CY2016Q1 | us-gaap |
Stockholders Equity
StockholdersEquity
|
349456000 | |
CY2017 | amba |
Cumulative Effect Of Change In Accounting Principle
CumulativeEffectOfChangeInAccountingPrinciple
|
11688000 | |
CY2017 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
3230000 | |
CY2017 | us-gaap |
Stock Issued During Period Value Restricted Stock Award Gross
StockIssuedDuringPeriodValueRestrictedStockAwardGross
|
0 | |
CY2017 | amba |
Stock Issued During Period Value Restricted Stock Units
StockIssuedDuringPeriodValueRestrictedStockUnits
|
0 | |
CY2017 | us-gaap |
Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
|
4034000 | |
CY2017 | us-gaap |
Stock Repurchased During Period Value
StockRepurchasedDuringPeriodValue
|
20183000 | |
CY2017 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
48832000 | |
CY2017 | us-gaap |
Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net
AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
|
-170000 | |
CY2018 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
2191000 | |
CY2018 | amba |
Stock Issued During Period Value Restricted Stock Units
StockIssuedDuringPeriodValueRestrictedStockUnits
|
0 | |
CY2018 | us-gaap |
Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
|
4646000 | |
CY2018 | us-gaap |
Stock Repurchased During Period Value
StockRepurchasedDuringPeriodValue
|
54788000 | |
CY2018 | us-gaap |
Depreciation
Depreciation
|
1789000 | |
CY2017 | us-gaap |
Depreciation
Depreciation
|
1535000 | |
CY2016 | us-gaap |
Depreciation
Depreciation
|
1590000 | |
CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
2981000 | |
CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
50000 | |
CY2016 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
16000 | |
CY2018 | us-gaap |
Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
|
-172000 | |
CY2017 | us-gaap |
Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
|
-246000 | |
CY2018 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
-7302000 | |
CY2017 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
-812000 | |
CY2016 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
-1262000 | |
CY2018 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
3238000 | |
CY2017 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
1978000 | |
CY2016 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-3627000 | |
CY2018 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
-379000 | |
CY2017 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
216000 | |
CY2016 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
572000 | |
CY2018 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-2132000 | |
CY2017 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-853000 | |
CY2016 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-1291000 | |
CY2018 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
33000 | |
CY2017 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
107000 | |
CY2016 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
114000 | |
CY2018 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-140000 | |
CY2018Q1 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
34117000 | |
CY2017 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
5780000 | |
CY2016 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-6880000 | |
CY2018 | us-gaap |
Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
|
1430000 | |
CY2017 | us-gaap |
Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
|
2069000 | |
CY2016 | us-gaap |
Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
|
4189000 | |
CY2018 | us-gaap |
Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
|
368000 | |
CY2017 | us-gaap |
Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
|
-219000 | |
CY2016 | us-gaap |
Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
|
244000 | |
CY2018 | amba |
Increase Decrease In Deferred Tax Liabilities
IncreaseDecreaseInDeferredTaxLiabilities
|
-40000 | |
CY2017 | amba |
Increase Decrease In Deferred Tax Liabilities
IncreaseDecreaseInDeferredTaxLiabilities
|
-89000 | |
CY2016 | amba |
Increase Decrease In Deferred Tax Liabilities
IncreaseDecreaseInDeferredTaxLiabilities
|
43000 | |
CY2018 | us-gaap |
Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
|
-7026000 | |
CY2017 | us-gaap |
Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
|
-2652000 | |
CY2016 | us-gaap |
Increase Decrease In Deferred Revenue
IncreaseDecreaseInDeferredRevenue
|
4939000 | |
CY2018 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
3450000 | |
CY2017 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
505000 | |
CY2016 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
5644000 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
85403000 | |
CY2017 | us-gaap |
Proceeds From Sale And Maturity Of Available For Sale Securities
ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
|
41435000 | |
CY2016 | us-gaap |
Proceeds From Sale And Maturity Of Available For Sale Securities
ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
|
32248000 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-9600000 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-45734000 | |
CY2016 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-34796000 | |
CY2018 | amba |
Payment For Software License Liabilities
PaymentForSoftwareLicenseLiabilities
|
4306000 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
113314000 | |
CY2016 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
123561000 | |
CY2018 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | |
CY2017 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | |
CY2016 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
29905000 | |
CY2018 | us-gaap |
Payments To Acquire Available For Sale Securities
PaymentsToAcquireAvailableForSaleSecurities
|
74863000 | |
CY2017 | us-gaap |
Payments To Acquire Available For Sale Securities
PaymentsToAcquireAvailableForSaleSecurities
|
115546000 | |
CY2016 | us-gaap |
Payments To Acquire Available For Sale Securities
PaymentsToAcquireAvailableForSaleSecurities
|
52786000 | |
CY2018 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
10900000 | |
CY2017 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
31078000 | |
CY2016 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
17732000 | |
CY2018 | us-gaap |
Proceeds From Sale And Maturity Of Available For Sale Securities
ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
|
58050000 | |
CY2017 | amba |
Payment For Software License Liabilities
PaymentForSoftwareLicenseLiabilities
|
0 | |
CY2016 | amba |
Payment For Software License Liabilities
PaymentForSoftwareLicenseLiabilities
|
0 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
|
-52003000 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
|
-12764000 | |
CY2016 | us-gaap |
Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
|
9000000 | |
CY2018 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
23800000 | |
CY2017 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
54816000 | |
CY2016 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
97765000 | |
CY2016Q1 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
268056000 | |
CY2015Q1 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
170291000 | |
CY2018 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
845000 | |
CY2017 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
2070000 | |
CY2018 | amba |
Capital Expenditures Incurred But Not Yet Paid And Financing Incurred For Intangible And Fixed Asset Purchases
CapitalExpendituresIncurredButNotYetPaidAndFinancingIncurredForIntangibleAndFixedAssetPurchases
|
9008000 | |
CY2017 | amba |
Capital Expenditures Incurred But Not Yet Paid And Financing Incurred For Intangible And Fixed Asset Purchases
CapitalExpendituresIncurredButNotYetPaidAndFinancingIncurredForIntangibleAndFixedAssetPurchases
|
481000 | |
CY2016 | amba |
Capital Expenditures Incurred But Not Yet Paid And Financing Incurred For Intangible And Fixed Asset Purchases
CapitalExpendituresIncurredButNotYetPaidAndFinancingIncurredForIntangibleAndFixedAssetPurchases
|
43000 | |
CY2018 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
3687000 | |
CY2017 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
2701000 | |
CY2016 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
2085000 | |
CY2018 | amba |
Proceeds From Issuance Of Shares Under Incentive Equity Plan And Employee Stock Purchase Plan
ProceedsFromIssuanceOfSharesUnderIncentiveEquityPlanAndEmployeeStockPurchasePlan
|
7091000 | |
CY2017 | amba |
Proceeds From Issuance Of Shares Under Incentive Equity Plan And Employee Stock Purchase Plan
ProceedsFromIssuanceOfSharesUnderIncentiveEquityPlanAndEmployeeStockPurchasePlan
|
7419000 | |
CY2016 | amba |
Proceeds From Issuance Of Shares Under Incentive Equity Plan And Employee Stock Purchase Plan
ProceedsFromIssuanceOfSharesUnderIncentiveEquityPlanAndEmployeeStockPurchasePlan
|
9000000 | |
CY2018 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
54788000 | |
CY2017 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
20183000 | |
CY2016 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
0 | |
CY2016 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
1618000 | |
CY2018 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<div> <p style="margin-bottom:0pt;margin-top:18pt;font-weight:bold;font-style:italic;font-family:Times New Roman;font-size:10pt;text-transform:none;font-variant: normal;text-indent:4.54%;">Use of Estimates </p> <p style="margin-top:6pt;margin-bottom:0pt;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reported periods. Actual results could differ from those estimates.</p> <p style="margin-top:12pt;margin-bottom:0pt;text-indent:4.54%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">On an ongoing basis, management evaluates its estimates and assumptions, including those related to (i) the collectability of accounts receivable; (ii) write down of excess and obsolete inventories; (iii) intangible assets and goodwill; (iv) the estimated useful lives of long-lived assets; (v) impairment of long-lived assets and financial instruments; (vi) warranty obligations; (vii) the valuation of stock-based compensation awards and financial instruments; (viii) the probability of performance objectives achievement; (ix) the realization of tax assets and estimates of tax liabilities, including reserves for uncertain tax positions; and (x) the recognition and disclosure of contingent liabilities. These estimates and assumptions are based on historical experience and on various other factors which the Company believes to be reasonable under the circumstances. The Company may engage third-party valuation specialists to assist with estimates related to the valuation of financial instruments, assets and stock awards associated with various contractual arrangements. Such estimates often require the selection of appropriate valuation methodologies and significant judgment. Actual results could differ from these estimates under different assumptions or circumstances and such differences could be material. </p></div> | |
CY2018 | amba |
Commitment Noncancelable Software License Payment
CommitmentNoncancelableSoftwareLicensePayment
|
13900000 | |
CY2018 | us-gaap |
Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
|
0 | |
CY2018 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | |
CY2018 | us-gaap |
Impairment Of Investments
ImpairmentOfInvestments
|
0 | |
CY2017Q1 | us-gaap |
Product Warranty Accrual Classified Current
ProductWarrantyAccrualClassifiedCurrent
|
500000 | |
CY2018Q1 | us-gaap |
Product Warranty Accrual Classified Current
ProductWarrantyAccrualClassifiedCurrent
|
1750000 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
|
0.00 | |
CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
|
0.00 | |
CY2016 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
|
0.00 | |
CY2017Q1 | us-gaap |
Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
|
100920000 | |
CY2018Q1 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
|
0 | |
CY2017Q1 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
|
13000 | |
CY2018Q1 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
|
279000 | |
CY2017Q1 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
|
83000 | |
CY2018Q1 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
101707000 | |
CY2017Q1 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
100850000 | |
CY2018Q1 | us-gaap |
Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value
AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue
|
63476000 | |
CY2017Q1 | us-gaap |
Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value
AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue
|
76992000 | |
CY2018Q1 | amba |
Available For Sale Securities Debt Maturities Within One To Two Years Fair Value
AvailableForSaleSecuritiesDebtMaturitiesWithinOneToTwoYearsFairValue
|
38231000 | |
CY2017Q1 | amba |
Available For Sale Securities Debt Maturities Within One To Two Years Fair Value
AvailableForSaleSecuritiesDebtMaturitiesWithinOneToTwoYearsFairValue
|
23858000 | |
CY2018Q1 | us-gaap |
Inventory Work In Process Net Of Reserves
InventoryWorkInProcessNetOfReserves
|
12073000 | |
CY2017Q1 | us-gaap |
Inventory Work In Process Net Of Reserves
InventoryWorkInProcessNetOfReserves
|
10105000 | |
CY2018Q1 | us-gaap |
Inventory Finished Goods Net Of Reserves
InventoryFinishedGoodsNetOfReserves
|
11310000 | |
CY2017Q1 | us-gaap |
Inventory Finished Goods Net Of Reserves
InventoryFinishedGoodsNetOfReserves
|
10040000 | |
CY2018Q1 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
16381000 | |
CY2017Q1 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
13427000 | |
CY2018Q1 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
9932000 | |
CY2017Q1 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
8439000 | |
CY2018Q1 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
17504000 | |
CY2018Q1 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
3087000 | |
CY2018Q1 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
14417000 | |
CY2017Q1 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
4255000 | |
CY2017Q1 | amba |
Deferred Revenue From Product Shipments
DeferredRevenueFromProductShipments
|
7725000 | |
CY2018Q1 | amba |
Deferred Revenue From Licenses Services
DeferredRevenueFromLicensesServices
|
271000 | |
CY2017Q1 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
106000 | |
CY2017Q1 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
4149000 | |
CY2018 | amba |
Noncancelable Internal Use Software License Amortization
NoncancelableInternalUseSoftwareLicenseAmortization
|
3000000 | |
CY2018 | us-gaap |
Impairment Of Intangible Assets Excluding Goodwill
ImpairmentOfIntangibleAssetsExcludingGoodwill
|
0 | |
CY2017 | us-gaap |
Impairment Of Intangible Assets Excluding Goodwill
ImpairmentOfIntangibleAssetsExcludingGoodwill
|
0 | |
CY2016 | us-gaap |
Impairment Of Intangible Assets Excluding Goodwill
ImpairmentOfIntangibleAssetsExcludingGoodwill
|
0 | |
CY2017 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | |
CY2016 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | |
CY2018Q1 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
15977000 | |
CY2017Q1 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
14685000 | |
CY2018Q1 | amba |
Accrued Rebates
AccruedRebates
|
584000 | |
CY2017Q1 | amba |
Accrued Rebates
AccruedRebates
|
972000 | |
CY2018Q1 | amba |
Accrued Development Cost Liabilities
AccruedDevelopmentCostLiabilities
|
6669000 | |
CY2017Q1 | amba |
Accrued Development Cost Liabilities
AccruedDevelopmentCostLiabilities
|
7605000 | |
CY2018Q1 | amba |
Liabilities Associated With Noncancelable Internal Use Software License At Net Present Value Current
LiabilitiesAssociatedWithNoncancelableInternalUseSoftwareLicenseAtNetPresentValueCurrent
|
4346000 | |
CY2017Q1 | amba |
Liabilities Associated With Noncancelable Internal Use Software License At Net Present Value Current
LiabilitiesAssociatedWithNoncancelableInternalUseSoftwareLicenseAtNetPresentValueCurrent
|
0 | |
CY2018Q1 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
2852000 | |
CY2017Q1 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
2686000 | |
CY2018Q1 | amba |
Deferred Revenue From Product Shipments
DeferredRevenueFromProductShipments
|
36000 | |
CY2017Q1 | amba |
Deferred Revenue From Licenses Services
DeferredRevenueFromLicensesServices
|
1748000 | |
CY2018Q1 | amba |
Deferred Cost Of Revenue From Product Shipments
DeferredCostOfRevenueFromProductShipments
|
0 | |
CY2017Q1 | amba |
Deferred Cost Of Revenue From Product Shipments
DeferredCostOfRevenueFromProductShipments
|
2048000 | |
CY2018Q1 | amba |
Unrecognized Tax Benefits Including Interest
UnrecognizedTaxBenefitsIncludingInterest
|
5352000 | |
CY2017Q1 | amba |
Unrecognized Tax Benefits Including Interest
UnrecognizedTaxBenefitsIncludingInterest
|
1905000 | |
CY2018Q1 | us-gaap |
Deferred Tax Liabilities Gross Noncurrent
DeferredTaxLiabilitiesGrossNoncurrent
|
1293000 | |
CY2017Q1 | us-gaap |
Deferred Tax Liabilities Gross Noncurrent
DeferredTaxLiabilitiesGrossNoncurrent
|
1333000 | |
CY2018Q1 | amba |
Liabilities Associated With Noncancelable Internal Use Software License At Net Present Value Noncurrent
LiabilitiesAssociatedWithNoncancelableInternalUseSoftwareLicenseAtNetPresentValueNoncurrent
|
4484000 | |
CY2017Q1 | amba |
Liabilities Associated With Noncancelable Internal Use Software License At Net Present Value Noncurrent
LiabilitiesAssociatedWithNoncancelableInternalUseSoftwareLicenseAtNetPresentValueNoncurrent
|
0 | |
CY2018Q1 | us-gaap |
Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
|
97000 | |
CY2017Q1 | us-gaap |
Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
|
3000 | |
CY2017Q2 | us-gaap |
Stock Repurchase Program Period In Force1
StockRepurchaseProgramPeriodInForce1
|
P12M | |
CY2017Q2 | amba |
Stock Repurchase Program Commencement Date
StockRepurchaseProgramCommencementDate
|
2017-07-01 | |
CY2018 | us-gaap |
Stock Repurchased During Period Shares
StockRepurchasedDuringPeriodShares
|
1094795 | |
CY2017 | us-gaap |
Stock Repurchased During Period Shares
StockRepurchasedDuringPeriodShares
|
405089 | |
us-gaap |
Stock Repurchased During Period Shares
StockRepurchasedDuringPeriodShares
|
1499884 | ||
us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
75000000 | ||
CY2018Q1 | us-gaap |
Stock Repurchase Program Remaining Authorized Repurchase Amount1
StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
|
31700000 | |
CY2018 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
56861000 | |
CY2017 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
48832000 | |
CY2016 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
31094000 | |
CY2015Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
2281909 | |
CY2016 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
|
179700 | |
CY2016 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
567888 | |
CY2016 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
|
40331 | |
CY2016Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
1853390 | |
CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
|
110500 | |
CY2017 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
235923 | |
CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
|
16708 | |
CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
|
7735 | |
CY2017Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
1703524 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
|
132250 | |
CY2018 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
175187 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
|
27721 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
|
21522 | |
CY2018Q1 | us-gaap |
Purchase Commitment Remaining Minimum Amount Committed
PurchaseCommitmentRemainingMinimumAmountCommitted
|
24300000 | |
CY2015Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
13.00 | |
CY2018Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
1611344 | |
CY2018Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
|
1351181 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
7446000 | |
CY2016 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
71.36 | |
CY2016 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
9.11 | |
CY2016 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
|
35.65 | |
CY2016Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
19.36 | |
CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
47.82 | |
CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
13.69 | |
CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
|
55.07 | |
CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice
|
14.19 | |
CY2017Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
21.66 | |
CY2018 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
54.66 | |
CY2018 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
12.50 | |
CY2018 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
|
56.97 | |
CY2018 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice
|
36.31 | |
CY2018Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
|
18.91 | |
CY2016 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
38.81 | |
CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
18.76 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
28.28 | |
CY2016 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
37603000 | |
CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
10788000 | |
CY2018 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P4Y7M17D | |
CY2018 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
|
P3Y11M4D | |
CY2018Q1 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
45868000 | |
CY2018Q1 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
|
44868000 | |
CY2018Q1 | amba |
Closing Market Price Of Ordinary Shares On Nasdaq On Last Day Of Reporting Period
ClosingMarketPriceOfOrdinarySharesOnNASDAQOnLastDayOfReportingPeriod
|
50.40 | |
CY2018 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Basic
UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
|
0 | |
CY2017 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Basic
UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
|
0 | |
CY2016 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Basic
UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
|
0 | |
CY2018 | amba |
Net Income Available To Ordinary Shareholders Basic
NetIncomeAvailableToOrdinaryShareholdersBasic
|
18852000 | |
CY2017 | amba |
Net Income Available To Ordinary Shareholders Basic
NetIncomeAvailableToOrdinaryShareholdersBasic
|
57810000 | |
CY2016 | amba |
Net Income Available To Ordinary Shareholders Basic
NetIncomeAvailableToOrdinaryShareholdersBasic
|
76508000 | |
CY2018 | amba |
Additional Undistributed Earnings Allocated To Ordinary Shareholders
AdditionalUndistributedEarningsAllocatedToOrdinaryShareholders
|
0 | |
CY2017 | amba |
Additional Undistributed Earnings Allocated To Ordinary Shareholders
AdditionalUndistributedEarningsAllocatedToOrdinaryShareholders
|
0 | |
CY2016 | amba |
Additional Undistributed Earnings Allocated To Ordinary Shareholders
AdditionalUndistributedEarningsAllocatedToOrdinaryShareholders
|
0 | |
CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
18852000 | |
CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
57810000 | |
CY2016 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
76508000 | |
CY2018 | us-gaap |
Weighted Average Number Of Shares Issued Basic
WeightedAverageNumberOfSharesIssuedBasic
|
33224803 | |
CY2017 | us-gaap |
Weighted Average Number Of Shares Issued Basic
WeightedAverageNumberOfSharesIssuedBasic
|
32671221 | |
CY2016 | us-gaap |
Weighted Average Number Of Shares Issued Basic
WeightedAverageNumberOfSharesIssuedBasic
|
31633992 | |
CY2018 | us-gaap |
Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation
WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation
|
0 | |
CY2017 | us-gaap |
Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation
WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation
|
0 | |
CY2016 | us-gaap |
Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation
WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation
|
56 | |
CY2018 | us-gaap |
Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
|
961797 | |
CY2017 | us-gaap |
Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
|
1080864 | |
CY2016 | us-gaap |
Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
|
1245341 | |
CY2018 | us-gaap |
Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends
IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends
|
390145 | |
CY2017 | us-gaap |
Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends
IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends
|
565068 | |
CY2016 | us-gaap |
Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends
IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends
|
865863 | |
CY2018 | us-gaap |
Incremental Common Shares Attributable To Equity Unit Purchase Agreements
IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements
|
6405 | |
CY2017 | us-gaap |
Incremental Common Shares Attributable To Equity Unit Purchase Agreements
IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements
|
10571 | |
CY2016 | us-gaap |
Incremental Common Shares Attributable To Equity Unit Purchase Agreements
IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements
|
10569 | |
CY2018 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
1203621 | |
CY2017 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
1250539 | |
CY2016 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
283081 | |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
2683000 | |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
3092000 | |
CY2016 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
3190000 | |
CY2018 | amba |
Income Loss From Continuing Operations Before Income Taxes From Non Us Entities
IncomeLossFromContinuingOperationsBeforeIncomeTaxesFromNonUSEntities
|
23046000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
20700000 | |
CY2017 | amba |
Income Loss From Continuing Operations Before Income Taxes From Non Us Entities
IncomeLossFromContinuingOperationsBeforeIncomeTaxesFromNonUSEntities
|
57789000 | |
CY2016 | amba |
Income Loss From Continuing Operations Before Income Taxes From Non Us Entities
IncomeLossFromContinuingOperationsBeforeIncomeTaxesFromNonUSEntities
|
82019000 | |
CY2018 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
3321000 | |
CY2017 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
818000 | |
CY2016 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
5273000 | |
CY2018 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
4000 | |
CY2017 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
-212000 | |
CY2016 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
541000 | |
CY2018 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
1435000 | |
CY2017 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
1454000 | |
CY2016 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
1874000 | |
CY2018 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
4760000 | |
CY2017 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
2060000 | |
CY2016 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
7688000 | |
CY2018 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
2185000 | |
CY2017 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
1174000 | |
CY2016 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
1050000 | |
CY2018 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
0 | |
CY2017 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
0 | |
CY2016 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
0 | |
CY2018 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
-68000 | |
CY2017 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
-163000 | |
CY2016 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
-37000 | |
CY2018 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
2117000 | |
CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
1011000 | |
CY2016 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
1013000 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.338 | |
CY2017 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.340 | |
CY2016 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.340 | |
CY2018 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
8699000 | |
CY2016 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
28971000 | |
CY2018 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
2000 | |
CY2017 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
-216000 | |
CY2016 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
541000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
-6424000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
-18357000 | |
CY2016 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
-26253000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
|
4645000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
|
1605000 | |
CY2016 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
|
2896000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Tax Credits Research
IncomeTaxReconciliationTaxCreditsResearch
|
2408000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Tax Credits Research
IncomeTaxReconciliationTaxCreditsResearch
|
2226000 | |
CY2016 | us-gaap |
Income Tax Reconciliation Tax Credits Research
IncomeTaxReconciliationTaxCreditsResearch
|
3517000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
-1000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
1901000 | |
CY2016 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
6090000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
2252000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
0 | |
CY2016 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
0 | |
CY2018 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
112000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-336000 | |
CY2016 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-27000 | |
us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | ||
CY2018 | amba |
Decrease Of Deferred Tax Assets And Corresponding Increase In Deferred Tax Expense
DecreaseOfDeferredTaxAssetsAndCorrespondingIncreaseInDeferredTaxExpense
|
1900000 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
18176000 | |
CY2017Q1 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
14782000 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Tax Deferred Expense
DeferredTaxAssetsTaxDeferredExpense
|
1213000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
28000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
467000 | |
CY2018Q1 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
22500000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
11313000 | |
CY2017Q1 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
37977000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
7892000 | |
CY2017Q1 | us-gaap |
Deferred Tax Assets Tax Deferred Expense
DeferredTaxAssetsTaxDeferredExpense
|
2381000 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
2899000 | |
CY2017Q1 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
3561000 | |
CY2018Q1 | amba |
Foreign Deferred Tax Assets
ForeignDeferredTaxAssets
|
229000 | |
CY2017Q1 | amba |
Foreign Deferred Tax Assets
ForeignDeferredTaxAssets
|
161000 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
22517000 | |
CY2017Q1 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
20885000 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
18538000 | |
CY2017Q1 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
15061000 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
3979000 | |
CY2017Q1 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
5824000 | |
CY2018Q1 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
1655000 | |
CY2017Q1 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
1383000 | |
CY2018Q1 | amba |
Foreign Deferred Tax Liabilities
ForeignDeferredTaxLiabilities
|
0 | |
CY2017Q1 | amba |
Foreign Deferred Tax Liabilities
ForeignDeferredTaxLiabilities
|
0 | |
CY2018Q1 | us-gaap |
Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
|
2324000 | |
CY2017Q1 | us-gaap |
Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
|
4441000 | |
CY2018Q1 | us-gaap |
Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Foreign Subsidiaries
DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries
|
6200000 | |
CY2018Q1 | us-gaap |
Undistributed Earnings Of Foreign Subsidiaries
UndistributedEarningsOfForeignSubsidiaries
|
51000000 | |
CY2018Q1 | amba |
Deferred Tax Assets Gross Net Of Deferred Tax Liabilities
DeferredTaxAssetsGrossNetOfDeferredTaxLiabilities
|
20800000 | |
CY2017Q1 | amba |
Deferred Tax Assets Gross Net Of Deferred Tax Liabilities
DeferredTaxAssetsGrossNetOfDeferredTaxLiabilities
|
19500000 | |
CY2016Q1 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
30211000 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
7830000 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
911000 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
0 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
975000 | |
CY2015Q1 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
4671000 | |
CY2016 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
17169000 | |
CY2016 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
8810000 | |
CY2016 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
37000 | |
CY2016 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | |
CY2016 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
402000 | |
CY2018Q1 | us-gaap |
Deferred Income Taxes And Other Tax Liabilities Noncurrent
DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent
|
5200000 | |
CY2017Q1 | us-gaap |
Deferred Income Taxes And Other Tax Liabilities Noncurrent
DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent
|
1800000 | |
CY2017Q1 | us-gaap |
Unrecognized Tax Benefits Interest On Income Taxes Accrued
UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
|
64000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
|
37000 | |
CY2018Q1 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
|
139000 | |
CY2017Q1 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
|
103000 | |
CY2018Q1 | amba |
Deferred Income Taxes And Taxes Payable Noncurrent
DeferredIncomeTaxesAndTaxesPayableNoncurrent
|
5400000 | |
CY2018 | us-gaap |
Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
|
5300000 | |
CY2017 | us-gaap |
Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
|
7600000 | |
CY2016 | us-gaap |
Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
|
6800000 | |
CY2018Q1 | us-gaap |
Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
|
2988000 | |
CY2018Q1 | us-gaap |
Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
|
2491000 | |
CY2018Q1 | us-gaap |
Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
|
905000 | |
CY2018Q1 | us-gaap |
Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
|
330000 | |
CY2018Q1 | us-gaap |
Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
|
83000 | |
CY2018Q1 | us-gaap |
Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
|
6797000 | |
CY2017Q1 | us-gaap |
Purchase Commitment Remaining Minimum Amount Committed
PurchaseCommitmentRemainingMinimumAmountCommitted
|
23900000 | |
CY2018 | us-gaap |
Number Of Reportable Segments
NumberOfReportableSegments
|
1 | |
CY2018Q1 | amba |
Minimum Percentage Of Voting Stock Used To Define Related Party
MinimumPercentageOfVotingStockUsedToDefineRelatedParty
|
0.10 |