2019 Q4 Form 10-K Financial Statement
#000151741321000030 Filed on March 01, 2021
Income Statement
Concept | 2019 Q4 | 2018 Q4 | 2018 |
---|---|---|---|
Revenue | $58.94M | $40.80M | $144.6M |
YoY Change | 44.46% | 35.82% | 37.81% |
Cost Of Revenue | $25.53M | $17.71M | $65.50M |
YoY Change | 44.16% | 22.22% | 34.57% |
Gross Profit | $33.41M | $23.09M | $79.06M |
YoY Change | 44.69% | 48.58% | 40.61% |
Gross Profit Margin | 56.68% | 56.59% | 54.69% |
Selling, General & Admin | $34.49M | $20.84M | $73.58M |
YoY Change | 65.5% | 24.57% | 26.28% |
% of Gross Profit | 103.23% | 90.26% | 93.07% |
Research & Development | $12.95M | $9.310M | $34.62M |
YoY Change | 39.1% | 17.7% | 19.42% |
% of Gross Profit | 38.76% | 40.32% | 43.78% |
Depreciation & Amortization | $4.860M | $3.680M | $13.40M |
YoY Change | 32.07% | 38.98% | |
% of Gross Profit | 14.55% | 15.94% | 16.95% |
Operating Expenses | $47.44M | $30.15M | $108.2M |
YoY Change | 57.35% | 22.36% | 24.0% |
Operating Profit | -$14.03M | -$7.060M | -$29.14M |
YoY Change | 98.73% | -22.42% | -6.1% |
Interest Expense | $470.0K | -$230.0K | $1.810M |
YoY Change | -304.35% | 15.0% | 62.19% |
% of Operating Profit | |||
Other Income/Expense, Net | -$200.0K | $20.00K | -$741.0K |
YoY Change | -1100.0% | -128.57% | 37.48% |
Pretax Income | -$13.76M | -$7.270M | -$20.64M |
YoY Change | 89.27% | -22.33% | -11.67% |
Income Tax | $310.0K | $40.00K | $185.0K |
% Of Pretax Income | |||
Net Earnings | -$14.07M | -$7.310M | -$30.94M |
YoY Change | 92.48% | -22.32% | -4.67% |
Net Earnings / Revenue | -23.87% | -17.92% | -21.4% |
Basic Earnings Per Share | |||
Diluted Earnings Per Share | -$149.1K | -$80.60K | -$340.7K |
COMMON SHARES | |||
Basic Shares Outstanding | |||
Diluted Shares Outstanding |
Balance Sheet
Concept | 2019 Q4 | 2018 Q4 | 2018 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | $131.1M | $83.64M | $83.60M |
YoY Change | 56.75% | 66.53% | |
Cash & Equivalents | $16.14M | $36.96M | $2.400M |
Short-Term Investments | $115.0M | $46.68M | $48.70M |
Other Short-Term Assets | $81.10M | $8.900M | |
YoY Change | 32.84% | ||
Inventory | |||
Prepaid Expenses | |||
Receivables | $37.14M | $24.73M | $24.70M |
Other Receivables | $0.00 | $0.00 | |
Total Short-Term Assets | $249.3M | $117.3M | $117.3M |
YoY Change | 112.61% | 54.55% | |
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $60.04M | $42.35M | $42.40M |
YoY Change | 41.75% | 14.59% | |
Goodwill | $372.0K | $360.0K | |
YoY Change | 3.33% | -5.76% | |
Intangibles | $1.125M | $610.0K | |
YoY Change | 84.43% | ||
Long-Term Investments | |||
YoY Change | |||
Other Assets | $10.11M | $2.163M | $2.200M |
YoY Change | 367.5% | 0.0% | |
Total Long-Term Assets | $71.65M | $45.49M | $45.50M |
YoY Change | 57.51% | 12.9% | |
TOTAL ASSETS | |||
Total Short-Term Assets | $249.3M | $117.3M | $117.3M |
Total Long-Term Assets | $71.65M | $45.49M | $45.50M |
Total Assets | $321.0M | $162.8M | $162.8M |
YoY Change | 97.21% | 40.1% | |
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $4.602M | $2.333M | $2.300M |
YoY Change | 97.26% | -43.9% | |
Accrued Expenses | $19.88M | $15.54M | $12.50M |
YoY Change | 27.96% | 31.58% | |
Deferred Revenue | $317.0K | $1.622M | |
YoY Change | -80.46% | ||
Short-Term Debt | $0.00 | $0.00 | |
YoY Change | |||
Long-Term Debt Due | $4.472M | $11.37M | $11.40M |
YoY Change | -60.67% | 533.33% | |
Total Short-Term Liabilities | $37.12M | $31.75M | $31.80M |
YoY Change | 16.92% | 74.73% | |
LONG-TERM LIABILITIES | |||
Long-Term Debt | $20.08M | $39.44M | $39.40M |
YoY Change | -49.08% | 69.83% | |
Other Long-Term Liabilities | $1.038M | $647.0K | $3.900M |
YoY Change | 60.43% | 85.71% | |
Total Long-Term Liabilities | $21.12M | $40.09M | $43.30M |
YoY Change | -47.32% | 71.15% | |
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $37.12M | $31.75M | $31.80M |
Total Long-Term Liabilities | $21.12M | $40.09M | $43.30M |
Total Liabilities | $63.32M | $75.10M | $75.10M |
YoY Change | -15.69% | 72.64% | |
SHAREHOLDERS EQUITY | |||
Retained Earnings | -$192.0M | -$146.2M | |
YoY Change | 31.35% | ||
Common Stock | $2.000K | $1.000K | |
YoY Change | 100.0% | ||
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | $0.00 | $2.109M | |
YoY Change | -100.0% | ||
Treasury Stock Shares | |||
Shareholders Equity | $257.7M | -$131.9M | $87.70M |
YoY Change | |||
Total Liabilities & Shareholders Equity | $321.0M | $162.8M | $162.8M |
YoY Change | 97.21% | 40.1% |
Cashflow Statement
Concept | 2019 Q4 | 2018 Q4 | 2018 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | -$14.07M | -$7.310M | -$30.94M |
YoY Change | 92.48% | -22.32% | -4.67% |
Depreciation, Depletion And Amortization | $4.860M | $3.680M | $13.40M |
YoY Change | 32.07% | 38.98% | |
Cash From Operating Activities | -$3.060M | -$790.0K | -$16.99M |
YoY Change | 287.34% | -34.32% | |
INVESTING ACTIVITIES | |||
Capital Expenditures | -$5.850M | -$7.330M | $16.70M |
YoY Change | -20.19% | 38.04% | |
Acquisitions | $0.00 | ||
YoY Change | |||
Other Investing Activities | $38.32M | -$1.430M | -$27.36M |
YoY Change | -2779.72% | 981.42% | |
Cash From Investing Activities | $32.48M | -$8.760M | -$47.11M |
YoY Change | -470.78% | 198.52% | |
FINANCING ACTIVITIES | |||
Cash Dividend Paid | |||
YoY Change | |||
Common Stock Issuance & Retirement, Net | $0.00 | ||
YoY Change | |||
Debt Paid & Issued, Net | |||
YoY Change | |||
Cash From Financing Activities | 1.930M | 25.31M | $69.64M |
YoY Change | -92.37% | 25.68% | |
NET CHANGE | |||
Cash From Operating Activities | -3.060M | -790.0K | -$16.99M |
Cash From Investing Activities | 32.48M | -8.760M | -$47.11M |
Cash From Financing Activities | 1.930M | 25.31M | $69.64M |
Net Change In Cash | 31.35M | 15.76M | $5.567M |
YoY Change | 98.92% | -59.46% | |
FREE CASH FLOW | |||
Cash From Operating Activities | -$3.060M | -$790.0K | -$16.99M |
Capital Expenditures | -$5.850M | -$7.330M | $16.70M |
Free Cash Flow | $2.790M | $6.540M | -$33.69M |
YoY Change | -57.34% | -11.26% |
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CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
-30750000 | USD |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-11480000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
492000 | USD |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
185000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-95932000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-51550000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-30935000 | USD |
CY2020 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-0.93 | |
CY2019 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-0.75 | |
CY2018 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-1.27 | |
CY2020 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
103552000 | shares |
CY2019 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
68350000 | shares |
CY2018 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
24376000 | shares |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-95932000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-51550000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-30935000 | USD |
CY2020 | us-gaap |
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
|
-135000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
|
111000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
|
-1000 | USD |
CY2020 | us-gaap |
Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
|
-55000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
|
121000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
|
-11000 | USD |
CY2020 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-190000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
232000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-12000 | USD |
CY2020 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
-96122000 | USD |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
-51318000 | USD |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
-30947000 | USD |
CY2017Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
-107006000 | USD |
CY2018 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
1561000 | USD |
CY2018 | fsly |
Stock Issued During Period Value Vesting Of Early Exercised Stock Options
StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions
|
337000 | USD |
CY2018 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
4079000 | USD |
CY2018 | fsly |
Temporary Equity Stock Issued During Period Issuance Costs
TemporaryEquityStockIssuedDuringPeriodIssuanceCosts
|
121000 | USD |
CY2018 | fsly |
Stockholders Equity Note Repayment
StockholdersEquityNoteRepayment
|
50000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-30935000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-12000 | USD |
CY2018Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
-131927000 | USD |
CY2019 | fsly |
Adjustments To Additional Paid In Capital Conversion Of Preferred Stock Warrants
AdjustmentsToAdditionalPaidInCapitalConversionOfPreferredStockWarrants
|
5665000 | USD |
CY2019 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
186912000 | USD |
CY2019 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
5579000 | USD |
CY2019 | fsly |
Stock Issued During Period Value Vesting Of Early Exercised Stock Options
StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions
|
620000 | USD |
CY2019 | us-gaap |
Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
|
4150000 | USD |
CY2019 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
12586000 | USD |
CY2019 | fsly |
Stockholders Equity Note Repayment
StockholdersEquityNoteRepayment
|
74000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-51550000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
232000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
257652000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
257652000 | USD |
CY2020 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
274177000 | USD |
CY2020 | us-gaap |
Stock Issued During Period Value Acquisitions
StockIssuedDuringPeriodValueAcquisitions
|
622595000 | USD |
CY2020 | fsly |
Stock Issued During Period Value Acquisition Shares Held Back For Restricted Stock Awards
StockIssuedDuringPeriodValueAcquisitionSharesHeldBackForRestrictedStockAwards
|
87714000 | USD |
CY2020 | us-gaap |
Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures
StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
|
112062 | shares |
CY2020 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
15273000 | USD |
CY2020 | fsly |
Stock Issued During Period Value Vesting Of Early Exercised Stock Options
StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions
|
467000 | USD |
CY2020 | us-gaap |
Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
|
8193000 | USD |
CY2020 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
66467000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-95932000 | USD |
CY2020 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-190000 | USD |
CY2020Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
1061865000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-95932000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-51550000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-30935000 | USD |
CY2020 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
19979000 | USD |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
16553000 | USD |
CY2018 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
13400000 | USD |
CY2020 | fsly |
Amortization Of Intangible Assets Acquired
AmortizationOfIntangibleAssetsAcquired
|
5078000 | USD |
CY2019 | fsly |
Amortization Of Intangible Assets Acquired
AmortizationOfIntangibleAssetsAcquired
|
0 | USD |
CY2018 | fsly |
Amortization Of Intangible Assets Acquired
AmortizationOfIntangibleAssetsAcquired
|
0 | USD |
CY2020 | fsly |
Amortization Of Right Of Use Assets And Other
AmortizationOfRightOfUseAssetsAndOther
|
21765000 | USD |
CY2019 | fsly |
Amortization Of Right Of Use Assets And Other
AmortizationOfRightOfUseAssetsAndOther
|
0 | USD |
CY2018 | fsly |
Amortization Of Right Of Use Assets And Other
AmortizationOfRightOfUseAssetsAndOther
|
0 | USD |
CY2020 | fsly |
Amortization Of Deferred Rent
AmortizationOfDeferredRent
|
0 | USD |
CY2019 | fsly |
Amortization Of Deferred Rent
AmortizationOfDeferredRent
|
-711000 | USD |
CY2018 | fsly |
Amortization Of Deferred Rent
AmortizationOfDeferredRent
|
-340000 | USD |
CY2020 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
219000 | USD |
CY2019 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
1909000 | USD |
CY2018 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
0 | USD |
CY2020 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
3516000 | USD |
CY2019 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
2294000 | USD |
CY2018 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
0 | USD |
CY2020 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
64433000 | USD |
CY2019 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
12145000 | USD |
CY2018 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
4079000 | USD |
CY2020 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
1719000 | USD |
CY2019 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
360000 | USD |
CY2018 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
599000 | USD |
CY2020 | us-gaap |
Fair Value Adjustment Of Warrants
FairValueAdjustmentOfWarrants
|
0 | USD |
CY2019 | us-gaap |
Fair Value Adjustment Of Warrants
FairValueAdjustmentOfWarrants
|
2404000 | USD |
CY2018 | us-gaap |
Fair Value Adjustment Of Warrants
FairValueAdjustmentOfWarrants
|
606000 | USD |
CY2020 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-624000 | USD |
CY2019 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
591000 | USD |
CY2018 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
354000 | USD |
CY2020 | fsly |
Interest Paid On Capital Lease
InterestPaidOnCapitalLease
|
688000 | USD |
CY2019 | fsly |
Interest Paid On Capital Lease
InterestPaidOnCapitalLease
|
364000 | USD |
CY2018 | fsly |
Interest Paid On Capital Lease
InterestPaidOnCapitalLease
|
203000 | USD |
CY2020 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
-653000 | USD |
CY2019 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
-108000 | USD |
CY2018 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
0 | USD |
CY2020 | fsly |
Tax Benefit Related To Release Of Valuation Allowance
TaxBenefitRelatedToReleaseOfValuationAllowance
|
12950000 | USD |
CY2019 | fsly |
Tax Benefit Related To Release Of Valuation Allowance
TaxBenefitRelatedToReleaseOfValuationAllowance
|
0 | USD |
CY2018 | fsly |
Tax Benefit Related To Release Of Valuation Allowance
TaxBenefitRelatedToReleaseOfValuationAllowance
|
0 | USD |
CY2020 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
9264000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
12767000 | USD |
CY2018 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
6234000 | USD |
CY2020 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
5550000 | USD |
CY2019 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
2666000 | USD |
CY2018 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
2325000 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
|
17162000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
|
3945000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
|
-10000 | USD |
CY2020 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
4059000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
2391000 | USD |
CY2018 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-372000 | USD |
CY2020 | us-gaap |
Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
|
12992000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
|
4401000 | USD |
CY2018 | us-gaap |
Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
|
3902000 | USD |
CY2020 | fsly |
Increase Decrease In Operating Lease Liabilities
IncreaseDecreaseInOperatingLeaseLiabilities
|
-18264000 | USD |
CY2019 | fsly |
Increase Decrease In Operating Lease Liabilities
IncreaseDecreaseInOperatingLeaseLiabilities
|
0 | USD |
CY2018 | fsly |
Increase Decrease In Operating Lease Liabilities
IncreaseDecreaseInOperatingLeaseLiabilities
|
0 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
4857000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
-1274000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
1182000 | USD |
CY2020 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
-19916000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
-31303000 | USD |
CY2018 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
-16985000 | USD |
CY2020 | us-gaap |
Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
|
269059000 | USD |
CY2019 | us-gaap |
Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
|
190980000 | USD |
CY2018 | us-gaap |
Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
|
62660000 | USD |
CY2020 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
143241000 | USD |
CY2019 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
52589000 | USD |
CY2018 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
0 | USD |
CY2020 | us-gaap |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
|
88719000 | USD |
CY2019 | us-gaap |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
|
70813000 | USD |
CY2018 | us-gaap |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
|
35210000 | USD |
CY2020 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
200988000 | USD |
CY2019 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | USD |
CY2018 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | USD |
CY2020 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
575000 | USD |
CY2019 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
0 | USD |
CY2018 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
0 | USD |
CY2020 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
29569000 | USD |
CY2019 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
14609000 | USD |
CY2018 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
16702000 | USD |
CY2020 | us-gaap |
Payments For Software
PaymentsForSoftware
|
6131000 | USD |
CY2019 | us-gaap |
Payments For Software
PaymentsForSoftware
|
4856000 | USD |
CY2018 | us-gaap |
Payments For Software
PaymentsForSoftware
|
2955000 | USD |
CY2020 | us-gaap |
Payments To Acquire Intangible Assets
PaymentsToAcquireIntangibleAssets
|
1811000 | USD |
CY2019 | us-gaap |
Payments To Acquire Intangible Assets
PaymentsToAcquireIntangibleAssets
|
635000 | USD |
CY2018 | us-gaap |
Payments To Acquire Intangible Assets
PaymentsToAcquireIntangibleAssets
|
0 | USD |
CY2020 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-275023000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-87678000 | USD |
CY2018 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-47107000 | USD |
CY2020 | us-gaap |
Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
|
192510000 | USD |
CY2018 | us-gaap |
Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
|
0 | USD |
CY2020 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
274896000 | USD |
CY2019 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
0 | USD |
CY2018 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
0 | USD |
CY2020 | us-gaap |
Proceeds From Notes Payable
ProceedsFromNotesPayable
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Notes Payable
ProceedsFromNotesPayable
|
20300000 | USD |
CY2018 | us-gaap |
Proceeds From Notes Payable
ProceedsFromNotesPayable
|
29411000 | USD |
CY2020 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
0 | USD |
CY2019 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
231000 | USD |
CY2018 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
257000 | USD |
CY2020 | us-gaap |
Repayments Of Notes Payable
RepaymentsOfNotesPayable
|
20300000 | USD |
CY2019 | us-gaap |
Repayments Of Notes Payable
RepaymentsOfNotesPayable
|
49167000 | USD |
CY2018 | us-gaap |
Repayments Of Notes Payable
RepaymentsOfNotesPayable
|
833000 | USD |
CY2020 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
5773000 | USD |
CY2019 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
1370000 | USD |
CY2018 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
1215000 | USD |
CY2020 | us-gaap |
Proceeds From Issuance Of Convertible Preferred Stock
ProceedsFromIssuanceOfConvertiblePreferredStock
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Issuance Of Convertible Preferred Stock
ProceedsFromIssuanceOfConvertiblePreferredStock
|
0 | USD |
CY2018 | us-gaap |
Proceeds From Issuance Of Convertible Preferred Stock
ProceedsFromIssuanceOfConvertiblePreferredStock
|
40000000 | USD |
CY2020 | us-gaap |
Proceeds From Stock Plans
ProceedsFromStockPlans
|
9318000 | USD |
CY2019 | us-gaap |
Proceeds From Stock Plans
ProceedsFromStockPlans
|
5402000 | USD |
CY2018 | us-gaap |
Proceeds From Stock Plans
ProceedsFromStockPlans
|
0 | USD |
CY2020 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
15273000 | USD |
CY2019 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
5579000 | USD |
CY2018 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
1561000 | USD |
CY2020 | fsly |
Proceeds From Stock Options Exercised Early
ProceedsFromStockOptionsExercisedEarly
|
0 | USD |
CY2018 | fsly |
Vesting Of Early Exercised Stock Options
VestingOfEarlyExercisedStockOptions
|
337000 | USD |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
86229000 | USD |
CY2019 | fsly |
Proceeds From Stock Options Exercised Early
ProceedsFromStockOptionsExercisedEarly
|
520000 | USD |
CY2018 | fsly |
Proceeds From Stock Options Exercised Early
ProceedsFromStockOptionsExercisedEarly
|
1054000 | USD |
CY2020 | fsly |
Proceeds From Repayment Of Stockholders Note
ProceedsFromRepaymentOfStockholdersNote
|
0 | USD |
CY2019 | fsly |
Proceeds From Repayment Of Stockholders Note
ProceedsFromRepaymentOfStockholdersNote
|
74000 | USD |
CY2018 | fsly |
Proceeds From Repayment Of Stockholders Note
ProceedsFromRepaymentOfStockholdersNote
|
50000 | USD |
CY2020 | fsly |
Payments For Repurchase Of Stock Options Exercised Early
PaymentsForRepurchaseOfStockOptionsExercisedEarly
|
0 | USD |
CY2019 | fsly |
Payments For Repurchase Of Stock Options Exercised Early
PaymentsForRepurchaseOfStockOptionsExercisedEarly
|
0 | USD |
CY2018 | fsly |
Payments For Repurchase Of Stock Options Exercised Early
PaymentsForRepurchaseOfStockOptionsExercisedEarly
|
13000 | USD |
CY2020 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
272739000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
168148000 | USD |
CY2018 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
69637000 | USD |
CY2020 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
-149000 | USD |
CY2019 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
99000 | USD |
CY2018 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
22000 | USD |
CY2020 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-22349000 | USD |
CY2019 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
49266000 | USD |
CY2018 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
5567000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
36963000 | USD |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
31396000 | USD |
CY2020Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
63880000 | USD |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
86229000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
36963000 | USD |
CY2020 | us-gaap |
Interest Paid Net
InterestPaidNet
|
1590000 | USD |
CY2019 | us-gaap |
Interest Paid Net
InterestPaidNet
|
5422000 | USD |
CY2018 | us-gaap |
Interest Paid Net
InterestPaidNet
|
1833000 | USD |
CY2020 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
1219000 | USD |
CY2019 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
361000 | USD |
CY2018 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
55000 | USD |
CY2020 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
3184000 | USD |
CY2019 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
7071000 | USD |
CY2018 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
133000 | USD |
CY2020 | fsly |
Vesting Of Early Exercised Stock Options
VestingOfEarlyExercisedStockOptions
|
467000 | USD |
CY2019 | fsly |
Vesting Of Early Exercised Stock Options
VestingOfEarlyExercisedStockOptions
|
620000 | USD |
CY2020 | us-gaap |
Capital Lease Obligations Incurred
CapitalLeaseObligationsIncurred
|
0 | USD |
CY2019 | us-gaap |
Capital Lease Obligations Incurred
CapitalLeaseObligationsIncurred
|
7380000 | USD |
CY2018 | us-gaap |
Capital Lease Obligations Incurred
CapitalLeaseObligationsIncurred
|
429000 | USD |
CY2020 | fsly |
Warrants Issued
WarrantsIssued
|
0 | USD |
CY2019 | fsly |
Warrants Issued
WarrantsIssued
|
0 | USD |
CY2018 | fsly |
Warrants Issued
WarrantsIssued
|
1639000 | USD |
CY2020 | fsly |
Change In Other Assets From Change In Accounting Principle
ChangeInOtherAssetsFromChangeInAccountingPrinciple
|
0 | USD |
CY2019 | fsly |
Change In Other Assets From Change In Accounting Principle
ChangeInOtherAssetsFromChangeInAccountingPrinciple
|
5727000 | USD |
CY2018 | fsly |
Change In Other Assets From Change In Accounting Principle
ChangeInOtherAssetsFromChangeInAccountingPrinciple
|
0 | USD |
CY2020 | us-gaap |
Conversion Of Stock Amount Converted1
ConversionOfStockAmountConverted1
|
0 | USD |
CY2019 | us-gaap |
Conversion Of Stock Amount Converted1
ConversionOfStockAmountConverted1
|
5665000 | USD |
CY2018 | us-gaap |
Conversion Of Stock Amount Converted1
ConversionOfStockAmountConverted1
|
0 | USD |
CY2020 | fsly |
Cashless Exercise Of Common Stock Warrants
CashlessExerciseOfCommonStockWarrants
|
1557000 | USD |
CY2019 | fsly |
Cashless Exercise Of Common Stock Warrants
CashlessExerciseOfCommonStockWarrants
|
1036000 | USD |
CY2018 | fsly |
Cashless Exercise Of Common Stock Warrants
CashlessExerciseOfCommonStockWarrants
|
0 | USD |
CY2020 | fsly |
Initial Public Offering Costs Incurred But Not Yet Paid
InitialPublicOfferingCostsIncurredButNotYetPaid
|
0 | USD |
CY2019 | fsly |
Initial Public Offering Costs Incurred But Not Yet Paid
InitialPublicOfferingCostsIncurredButNotYetPaid
|
130000 | USD |
CY2018 | fsly |
Initial Public Offering Costs Incurred But Not Yet Paid
InitialPublicOfferingCostsIncurredButNotYetPaid
|
0 | USD |
CY2020 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
2034000 | USD |
CY2019 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
441000 | USD |
CY2018 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
0 | USD |
CY2020 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
23827000 | USD |
CY2019 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
0 | USD |
CY2018 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
0 | USD |
CY2020 | us-gaap |
Right Of Use Asset Obtained In Exchange For Finance Lease Liability
RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
|
22541000 | USD |
CY2019 | us-gaap |
Right Of Use Asset Obtained In Exchange For Finance Lease Liability
RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
|
0 | USD |
CY2018 | us-gaap |
Right Of Use Asset Obtained In Exchange For Finance Lease Liability
RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
|
0 | USD |
CY2020 | us-gaap |
Stock Issued1
StockIssued1
|
536432000 | USD |
CY2019 | us-gaap |
Stock Issued1
StockIssued1
|
0 | USD |
CY2018 | us-gaap |
Stock Issued1
StockIssued1
|
0 | USD |
CY2020Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
62900000 | USD |
CY2019Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
16142000 | USD |
CY2018Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
36963000 | USD |
CY2020Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
87000 | USD |
CY2019Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
70087000 | USD |
CY2018Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
0 | USD |
CY2020Q4 | us-gaap |
Restricted Cash Equivalents
RestrictedCashEquivalents
|
893000 | USD |
CY2019Q4 | us-gaap |
Restricted Cash Equivalents
RestrictedCashEquivalents
|
0 | USD |
CY2018Q4 | us-gaap |
Restricted Cash Equivalents
RestrictedCashEquivalents
|
0 | USD |
CY2020Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
63880000 | USD |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
86229000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
36963000 | USD |
CY2020 | us-gaap |
Nature Of Operations
NatureOfOperations
|
Nature of Business<div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Fastly, Inc. has built an edge cloud platform that can process, serve, and secure its customer’s applications as close to their end users as possible. Our edge network spans across 56 markets, as of December 31, 2020. We were incorporated in Delaware in 2011 and are headquartered in San Francisco, California.</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">As used herein, "Fastly," "we," "our," "the Company," and similar terms include Fastly, Inc. and its subsidiaries, unless the context indicates otherwise.</span></div><div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Stock Split</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On May 3, 2019, we implemented a 1-for-2 reverse stock split of our stock. All shares of common stock, stock-based instruments, and per-share data included in these financial statements give effect to the stock split and the changes in authorized shares have been adjusted retroactively for all periods presented.</span></div><div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Initial Public Offering ("IPO")</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On May 21, 2019 we completed an IPO in which we sold 12,937,500 shares of our newly authorized Class A common stock, which included 1,687,500 shares sold pursuant to the exercise by the underwriters of an option to purchase additional shares, at the public offering price of $16.00 per share. We received net proceeds of $192.5 million, after deducting underwriting discounts and commissions, from sales of our shares in the IPO. The net proceeds include additional proceeds of $25.1 million, net of underwriters' discounts and commissions, from the exercise of the underwriters' option to purchase an additional 1,687,500 shares of our Class A common stock. Prior to the closing of the IPO, all shares of common stock then outstanding were reclassified as Class B common stock. </span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Immediately upon the closing of the IPO, all shares of convertible preferred stock then outstanding were converted into 53,630,213 shares of Class B common stock on a one-to-one basis. Prior to the IPO, we had seven outstanding series of convertible preferred stock each with a par value of $0.00002 per share, convertible at the option of the holder, that was classified as temporary equity on our consolidated balance sheet. On May 17, 2019, immediately upon closing of the IPO, our convertible preferred stock was automatically converted to shares of our Class B common stock. As of both December 31, 2019 and 2020, we had zero convertible preferred stock issued or outstanding.</span></div><div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Follow-on Public Offering</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On May 26, 2020, we completed a follow-on public offering in which we sold 6,900,000 shares of Class A common stock, which included 900,000 shares sold pursuant to the exercise by the underwriters of an option to purchase additional shares, at the public offering price of $41.50 per share. We received net proceeds of $274.9 million, after deducting underwriting discounts and commissions, from sales of our shares in the public offering.</span></div> | |
CY2020Q4 | fsly |
Operating Markets
OperatingMarkets
|
56 | operatingMarket |
CY2019Q2 | fsly |
Convertible Preferred Stock Number Of Series
ConvertiblePreferredStockNumberOfSeries
|
7 | stockSeries |
CY2019Q2 | us-gaap |
Temporary Equity Par Or Stated Value Per Share
TemporaryEquityParOrStatedValuePerShare
|
0.00002 | |
CY2020Q4 | us-gaap |
Temporary Equity Shares Issued
TemporaryEquitySharesIssued
|
0 | shares |
CY2019Q4 | us-gaap |
Temporary Equity Shares Outstanding
TemporaryEquitySharesOutstanding
|
0 | shares |
CY2019Q4 | us-gaap |
Temporary Equity Shares Issued
TemporaryEquitySharesIssued
|
0 | shares |
CY2020Q4 | us-gaap |
Temporary Equity Shares Outstanding
TemporaryEquitySharesOutstanding
|
0 | shares |
CY2020 | us-gaap |
Basis Of Accounting
BasisOfAccounting
|
<div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Basis of Presentation</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles ("U.S. GAAP"). </span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain changes in presentation have been made to conform the prior period presentation to the current period reporting. Such reclassifications did not affect total revenues, operating income, or net income. We have made certain presentation changes to distinguish and disclose as a separate line item, the non-cash amortization expense of our deferred contract costs balance from other assets within operating cash flows in the Consolidated Statements of Cash Flows. With the adoption of the new leasing standard Accounting Standards Codification No. 842, Leases ("ASC 842"), we have also made certain presentation changes to distinguish and disclose as separate line items, our current and noncurrent finance leases liabilities from our current and noncurrent debt amounts in the Consolidated Balance Sheets.</span></div> | |
CY2020 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of our consolidated financial statements requires us to make estimates, judgments, and assumptions that affect the reported amounts of assets, liabilities, revenue, costs and expenses, and related disclosures. Actual results and outcomes could differ significantly from our estimates, judgments, and assumptions. Significant estimates, judgments, and assumptions used in these financial statements include, but are not limited to, those related to revenue, accounts receivable and related reserves, fair value of assets acquired and liabilities assumed for business combinations, useful lives and realizability of long-lived assets, income tax reserves, and accounting for stock-based compensation. Estimates are periodically reviewed in light of changes in circumstances, facts, and experience. The effects of material revisions in estimates are reflected in the consolidated financial statements in the period of change and prospectively from the date of the change in estimate.</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The ongoing global COVID-19 pandemic has impacted many operational aspects of our business and may continue to do so in the future. We assessed the impact that COVID-19 had on our results of operations, including, but not limited to an assessment of our allowance for doubtful accounts, the carrying value of short-term and long-term investments, the carrying value of goodwill and other long-lived assets, and the impact to revenue recognition and cost of revenues. While the COVID-19 pandemic has not had a material adverse impact on our financial operations to date, the future impacts of the pandemic and any resulting economic impact are largely unknown and rapidly evolving. We will continue to actively monitor the impact that COVID-19 has on the results of our business operations, and may make decisions required by federal, state or local authorities, or that are determined to be in the best interests of our employees, customers, partners, suppliers and stockholders. As a result, our estimates and judgments may change materially as new events occur or additional information becomes available to us.</span></div> | |
CY2019Q4 | us-gaap |
Restricted Cash
RestrictedCash
|
70100000 | USD |
CY2020Q4 | fsly |
Cash Released From Restriction
CashReleasedFromRestriction
|
70000000.0 | USD |
CY2018 | us-gaap |
Advertising Expense
AdvertisingExpense
|
500000 | USD |
CY2020Q4 | us-gaap |
Restricted Cash
RestrictedCash
|
1000000.0 | USD |
CY2020Q4 | us-gaap |
Restricted Cash Equivalents
RestrictedCashEquivalents
|
900000 | USD |
CY2020 | us-gaap |
Concentration Risk Credit Risk
ConcentrationRiskCreditRisk
|
<div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentrations of Credit Risk</span></div><div style="margin-bottom:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject us to significant concentration of credit risk consist primarily of cash, cash equivalents, marketable securities, and accounts receivable. The primary focus of our investment strategy is to preserve capital and meet liquidity requirements. Our investment policy addresses the level of credit exposure by limiting the concentration in any one corporate issuer or sector and establishing a minimum allowable credit rating. To manage the risk exposure, we invest cash equivalents and marketable securities in a variety of fixed income securities, including government and investment-grade debt securities and money market funds. We place our cash primarily in checking and money market accounts with reputable financial institutions. Deposits held with these financial institutions may exceed the amount of insurance provided on such deposits, if any.</span></div>Concentrations of credit risk with respect to accounts receivable are primarily limited to certain customers to which we make substantial sales. Our customer base consists of a large number of geographically dispersed customers diversified across several industries. To reduce risk, we routinely assess the financial strength of our customers. Based on such assessments, we believe that our accounts receivable credit risk exposure is limited. | |
CY2020 | us-gaap |
Advertising Expense
AdvertisingExpense
|
3800000 | USD |
CY2019 | us-gaap |
Advertising Expense
AdvertisingExpense
|
1400000 | USD |
CY2020Q1 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
54700000 | USD |
CY2020Q1 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
56300000 | USD |
CY2020 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
290874000 | USD |
CY2019 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
200462000 | USD |
CY2018 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
144563000 | USD |
CY2020Q4 | fsly |
Enterprise Customer Threshold
EnterpriseCustomerThreshold
|
100000 | USD |
CY2020 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
290874000 | USD |
CY2019 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
200462000 | USD |
CY2018 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
144563000 | USD |
CY2020 | us-gaap |
Revenue Performance Obligation Description Of Payment Terms
RevenuePerformanceObligationDescriptionOfPaymentTerms
|
Payment terms on invoiced amounts are typically 15 to 45 days. | |
CY2020Q4 | us-gaap |
Contract With Customer Asset Net
ContractWithCustomerAssetNet
|
387000 | USD |
CY2019Q4 | us-gaap |
Contract With Customer Asset Net
ContractWithCustomerAssetNet
|
271000 | USD |
CY2020Q4 | us-gaap |
Contract With Customer Liability
ContractWithCustomerLiability
|
18020000 | USD |
CY2019Q4 | us-gaap |
Contract With Customer Liability
ContractWithCustomerLiability
|
317000 | USD |
CY2020Q4 | us-gaap |
Contract With Customer Liability Increase Decrease For Contract Acquired In Business Combination
ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination
|
14600000 | USD |
CY2020 | us-gaap |
Contract With Customer Liability Revenue Recognized
ContractWithCustomerLiabilityRevenueRecognized
|
310000 | USD |
CY2019 | us-gaap |
Contract With Customer Liability Revenue Recognized
ContractWithCustomerLiabilityRevenueRecognized
|
1539000 | USD |
CY2020Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
155300000 | USD |
CY2020Q4 | us-gaap |
Revenue Remaining Performance Obligation Percentage
RevenueRemainingPerformanceObligationPercentage
|
0.71 | |
CY2020Q4 | us-gaap |
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1
RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
|
P12M | |
CY2020Q4 | us-gaap |
Capitalized Contract Cost Net Noncurrent
CapitalizedContractCostNetNoncurrent
|
19332000 | USD |
CY2019Q4 | us-gaap |
Capitalized Contract Cost Net Noncurrent
CapitalizedContractCostNetNoncurrent
|
6804000 | USD |
CY2020 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
3500000 | USD |
CY2019 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
2300000 | USD |
CY2020Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
62900000 | USD |
CY2019Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
16142000 | USD |
CY2020Q4 | us-gaap |
Available For Sale Securities Debt Securities Current
AvailableForSaleSecuritiesDebtSecuritiesCurrent
|
131283000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Securities Debt Securities Current
AvailableForSaleSecuritiesDebtSecuritiesCurrent
|
114967000 | USD |
CY2020Q4 | us-gaap |
Available For Sale Securities Debt Securities Noncurrent
AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
|
20448000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Securities Debt Securities Noncurrent
AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
|
0 | USD |
CY2020Q4 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
151731000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
114967000 | USD |
CY2019Q4 | us-gaap |
Cash Equivalents At Carrying Value
CashEquivalentsAtCarryingValue
|
4519000 | USD |
CY2020Q4 | us-gaap |
Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
|
151626000 | USD |
CY2020Q4 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
|
110000 | USD |
CY2020Q4 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
|
5000 | USD |
CY2020Q4 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
151731000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
|
114870000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
|
98000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
|
1000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
114967000 | USD |
CY2019Q4 | us-gaap |
Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions
|
0 | security |
CY2020Q4 | us-gaap |
Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions
|
0 | security |
CY2020Q4 | us-gaap |
Cash Equivalents At Carrying Value
CashEquivalentsAtCarryingValue
|
41627000 | USD |
CY2020Q4 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
151731000 | USD |
CY2020Q4 | us-gaap |
Restricted Cash And Cash Equivalents
RestrictedCashAndCashEquivalents
|
980000 | USD |
CY2020Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
194338000 | USD |
CY2020Q4 | us-gaap |
Restricted Cash
RestrictedCash
|
1000000.0 | USD |
CY2020Q4 | us-gaap |
Restricted Cash Noncurrent
RestrictedCashNoncurrent
|
900000 | USD |
CY2019Q4 | us-gaap |
Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
|
114967000 | USD |
CY2019Q4 | us-gaap |
Restricted Cash And Cash Equivalents
RestrictedCashAndCashEquivalents
|
70087000 | USD |
CY2019Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
189573000 | USD |
CY2020 | us-gaap |
Business Acquisitions Pro Forma Revenue
BusinessAcquisitionsProFormaRevenue
|
313665000 | USD |
CY2019 | us-gaap |
Business Acquisitions Pro Forma Revenue
BusinessAcquisitionsProFormaRevenue
|
218529000 | USD |
CY2020 | us-gaap |
Business Acquisitions Pro Forma Net Income Loss
BusinessAcquisitionsProFormaNetIncomeLoss
|
159248000 | USD |
CY2019 | us-gaap |
Business Acquisitions Pro Forma Net Income Loss
BusinessAcquisitionsProFormaNetIncomeLoss
|
178124000 | USD |
CY2019Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
1816000 | USD |
CY2018Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
1679000 | USD |
CY2020 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
1719000 | USD |
CY2019 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
360000 | USD |
CY2020 | us-gaap |
Allowance For Doubtful Accounts Receivable Write Offs
AllowanceForDoubtfulAccountsReceivableWriteOffs
|
287000 | USD |
CY2019 | us-gaap |
Allowance For Doubtful Accounts Receivable Write Offs
AllowanceForDoubtfulAccountsReceivableWriteOffs
|
223000 | USD |
CY2020Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
3248000 | USD |
CY2019Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
1816000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
|
157632000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
|
108276000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization
|
61653000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization
|
48239000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
|
95979000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization
PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
|
60037000 | USD |
CY2020 | us-gaap |
Depreciation And Amortization
DepreciationAndAmortization
|
19800000 | USD |
CY2019 | us-gaap |
Depreciation And Amortization
DepreciationAndAmortization
|
16400000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Right Of Use Asset Before Accumulated Amortization
FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization
|
36200000 | USD |
CY2019Q4 | us-gaap |
Finance Lease Right Of Use Asset Before Accumulated Amortization
FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization
|
13700000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Right Of Use Asset Accumulated Amortization
FinanceLeaseRightOfUseAssetAccumulatedAmortization
|
6700000 | USD |
CY2019Q4 | us-gaap |
Finance Lease Right Of Use Asset Accumulated Amortization
FinanceLeaseRightOfUseAssetAccumulatedAmortization
|
3800000 | USD |
CY2020Q4 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
17840000 | USD |
CY2019Q4 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
8734000 | USD |
CY2020Q4 | us-gaap |
Sales And Excise Tax Payable Current
SalesAndExciseTaxPayableCurrent
|
6274000 | USD |
CY2019Q4 | us-gaap |
Sales And Excise Tax Payable Current
SalesAndExciseTaxPayableCurrent
|
3938000 | USD |
CY2020Q4 | fsly |
Accrued Colocation And Bandwidth Costs
AccruedColocationAndBandwidthCosts
|
3644000 | USD |
CY2019Q4 | fsly |
Accrued Colocation And Bandwidth Costs
AccruedColocationAndBandwidthCosts
|
3237000 | USD |
CY2020Q4 | fsly |
Accrued Acquisition Related Costs Current
AccruedAcquisitionRelatedCostsCurrent
|
2208000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
|
23095000 | USD |
CY2019Q4 | fsly |
Accrued Acquisition Related Costs Current
AccruedAcquisitionRelatedCostsCurrent
|
0 | USD |
CY2020Q4 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
4368000 | USD |
CY2019Q4 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
3969000 | USD |
CY2020Q4 | us-gaap |
Accrued Liabilities Current
AccruedLiabilitiesCurrent
|
34334000 | USD |
CY2019Q4 | us-gaap |
Accrued Liabilities Current
AccruedLiabilitiesCurrent
|
19878000 | USD |
CY2020Q4 | us-gaap |
Contract With Customer Liability Current
ContractWithCustomerLiabilityCurrent
|
15916000 | USD |
CY2019Q4 | us-gaap |
Contract With Customer Liability Current
ContractWithCustomerLiabilityCurrent
|
317000 | USD |
CY2020Q4 | fsly |
Accrued Computer And Networking Equipment
AccruedComputerAndNetworkingEquipment
|
3126000 | USD |
CY2019Q4 | fsly |
Accrued Computer And Networking Equipment
AccruedComputerAndNetworkingEquipment
|
7060000 | USD |
CY2020Q4 | fsly |
Liability For Early Exercised Stock Options Current
LiabilityForEarlyExercisedStockOptionsCurrent
|
255000 | USD |
CY2019Q4 | fsly |
Liability For Early Exercised Stock Options Current
LiabilityForEarlyExercisedStockOptionsCurrent
|
467000 | USD |
CY2020Q4 | us-gaap |
Other Sundry Liabilities Current
OtherSundryLiabilitiesCurrent
|
380000 | USD |
CY2019Q4 | us-gaap |
Other Sundry Liabilities Current
OtherSundryLiabilitiesCurrent
|
325000 | USD |
CY2020Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
19677000 | USD |
CY2019Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
8169000 | USD |
CY2020Q4 | us-gaap |
Contract With Customer Liability Noncurrent
ContractWithCustomerLiabilityNoncurrent
|
2104000 | USD |
CY2019Q4 | us-gaap |
Contract With Customer Liability Noncurrent
ContractWithCustomerLiabilityNoncurrent
|
0 | USD |
CY2020Q4 | fsly |
Accrued Payroll Taxes Noncurrent Cares Act
AccruedPayrollTaxesNoncurrentCARESAct
|
1676000 | USD |
CY2019Q4 | fsly |
Accrued Payroll Taxes Noncurrent Cares Act
AccruedPayrollTaxesNoncurrentCARESAct
|
0 | USD |
CY2020Q4 | us-gaap |
Deferred Rent Credit Noncurrent
DeferredRentCreditNoncurrent
|
0 | USD |
CY2019Q4 | us-gaap |
Deferred Rent Credit Noncurrent
DeferredRentCreditNoncurrent
|
634000 | USD |
CY2020Q4 | us-gaap |
Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
|
620000 | USD |
CY2019Q4 | us-gaap |
Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
|
404000 | USD |
CY2020Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
4400000 | USD |
CY2019Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
1038000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-12000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
232000 | USD |
CY2020 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-190000 | USD |
CY2020 | fsly |
Subleases Remaining Lease Terms
SubleasesRemainingLeaseTerms
|
P1Y | |
CY2020 | us-gaap |
Sublease Income
SubleaseIncome
|
1300000 | USD |
CY2019 | us-gaap |
Sublease Income
SubleaseIncome
|
1200000 | USD |
CY2018 | us-gaap |
Sublease Income
SubleaseIncome
|
900000 | USD |
CY2020 | us-gaap |
Operating Lease Cost
OperatingLeaseCost
|
21765000 | USD |
CY2020 | us-gaap |
Variable Lease Cost
VariableLeaseCost
|
4363000 | USD |
CY2020 | us-gaap |
Short Term Lease Cost
ShortTermLeaseCost
|
0 | USD |
CY2020 | fsly |
Operating Variable And Short Term Lease Costs
OperatingVariableAndShortTermLeaseCosts
|
26128000 | USD |
CY2020 | us-gaap |
Finance Lease Right Of Use Asset Amortization
FinanceLeaseRightOfUseAssetAmortization
|
2858000 | USD |
CY2020 | us-gaap |
Finance Lease Interest Expense
FinanceLeaseInterestExpense
|
688000 | USD |
CY2020 | fsly |
Finance Lease Cost
FinanceLeaseCost
|
3546000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Payments Due Next Twelve Months
FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
|
12115000 | USD |
CY2020 | us-gaap |
Operating Lease Payments
OperatingLeasePayments
|
18264000 | USD |
CY2020 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
5773000 | USD |
CY2020 | us-gaap |
Finance Lease Interest Payment On Liability
FinanceLeaseInterestPaymentOnLiability
|
688000 | USD |
CY2020 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
23827000 | USD |
CY2020 | us-gaap |
Right Of Use Asset Obtained In Exchange For Finance Lease Liability
RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
|
22541000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P4Y5M8D | |
CY2020Q4 | us-gaap |
Finance Lease Weighted Average Remaining Lease Term1
FinanceLeaseWeightedAverageRemainingLeaseTerm1
|
P2Y6M3D | |
CY2020Q4 | us-gaap |
Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
|
0.0568 | |
CY2020Q4 | us-gaap |
Finance Lease Weighted Average Discount Rate Percent
FinanceLeaseWeightedAverageDiscountRatePercent
|
0.0512 | |
CY2020Q4 | fsly |
Lessee Operating Lease Lease Not Yet Commenced Commitment Amount
LesseeOperatingLeaseLeaseNotYetCommencedCommitmentAmount
|
7900000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
|
17010000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Payments Due Year Two
FinanceLeaseLiabilityPaymentsDueYearTwo
|
9447000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
|
10706000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Payments Due Year Three
FinanceLeaseLiabilityPaymentsDueYearThree
|
5921000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
|
7965000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Payments Due Year Four
FinanceLeaseLiabilityPaymentsDueYearFour
|
0 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
|
7416000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Payments Due Year Five
FinanceLeaseLiabilityPaymentsDueYearFive
|
0 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
|
9888000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Payments Due After Year Five
FinanceLeaseLiabilityPaymentsDueAfterYearFive
|
0 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
|
76080000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Payments Due
FinanceLeaseLiabilityPaymentsDue
|
27483000 | USD |
CY2020Q4 | us-gaap |
Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
|
9591000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability Undiscounted Excess Amount
FinanceLeaseLiabilityUndiscountedExcessAmount
|
1742000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
66489000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability
FinanceLeaseLiability
|
25741000 | USD |
CY2019Q4 | us-gaap |
Goodwill
Goodwill
|
372000 | USD |
CY2018Q4 | us-gaap |
Goodwill
Goodwill
|
360000 | USD |
CY2020 | us-gaap |
Goodwill Acquired During Period
GoodwillAcquiredDuringPeriod
|
635204000 | USD |
CY2019 | us-gaap |
Goodwill Acquired During Period
GoodwillAcquiredDuringPeriod
|
0 | USD |
CY2020 | us-gaap |
Goodwill Foreign Currency Translation Gain Loss
GoodwillForeignCurrencyTranslationGainLoss
|
14000 | USD |
CY2019 | us-gaap |
Goodwill Foreign Currency Translation Gain Loss
GoodwillForeignCurrencyTranslationGainLoss
|
12000 | USD |
CY2020Q4 | us-gaap |
Goodwill
Goodwill
|
635590000 | USD |
CY2019Q4 | us-gaap |
Goodwill
Goodwill
|
372000 | USD |
CY2019 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2018 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2020 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2020Q4 | us-gaap |
Intangible Assets Gross Excluding Goodwill
IntangibleAssetsGrossExcludingGoodwill
|
127398000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
5656000 | USD |
CY2020Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
121742000 | USD |
CY2020Q4 | us-gaap |
Extinguishment Of Debt Amount
ExtinguishmentOfDebtAmount
|
20300000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation
PurchaseObligation
|
59588000 | USD |
CY2019Q4 | us-gaap |
Intangible Assets Gross Excluding Goodwill
IntangibleAssetsGrossExcludingGoodwill
|
1487000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
362000 | USD |
CY2019Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
1125000 | USD |
CY2020 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
5300000 | USD |
CY2019 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
100000 | USD |
CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
100000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
|
21143000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
|
20765000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
|
19665000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
|
18830000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
|
16352000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense After Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
|
24619000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
121374000 | USD |
CY2020Q4 | fsly |
Cash Released From Restriction
CashReleasedFromRestriction
|
70000000.0 | USD |
CY2020 | us-gaap |
Interest Expense Debt
InterestExpenseDebt
|
900000 | USD |
CY2019 | us-gaap |
Interest Expense Debt
InterestExpenseDebt
|
5200000 | USD |
CY2018 | us-gaap |
Interest Expense Debt
InterestExpenseDebt
|
1900000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Next Twelve Months
PurchaseObligationDueInNextTwelveMonths
|
35685000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Second Year
PurchaseObligationDueInSecondYear
|
14903000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Third Year
PurchaseObligationDueInThirdYear
|
9000000 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Fourth Year
PurchaseObligationDueInFourthYear
|
0 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due In Fifth Year
PurchaseObligationDueInFifthYear
|
0 | USD |
CY2020Q4 | us-gaap |
Purchase Obligation Due After Fifth Year
PurchaseObligationDueAfterFifthYear
|
0 | USD |
CY2020Q4 | us-gaap |
Sales And Excise Tax Payable Current And Noncurrent
SalesAndExciseTaxPayableCurrentAndNoncurrent
|
6300000 | USD |
CY2019Q4 | us-gaap |
Sales And Excise Tax Payable Current And Noncurrent
SalesAndExciseTaxPayableCurrentAndNoncurrent
|
3900000 | USD |
CY2020Q3 | fsly |
Loss Contingency Pending Claims Number Consolidated
LossContingencyPendingClaimsNumberConsolidated
|
2 | lawsuit |
CY2020Q3 | us-gaap |
Loss Contingency Pending Claims Number
LossContingencyPendingClaimsNumber
|
1 | lawsuit |
CY2019Q2 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
10000000.0 | shares |
CY2019Q2 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.00002 | |
CY2020Q4 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | shares |
CY2019Q4 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | shares |
CY2020Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | shares |
CY2019Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | shares |
CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
10370000 | shares |
CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
1.92 | |
CY2017 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P8Y | |
CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
16901000 | USD |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
|
3984000 | shares |
CY2018 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
5.32 | |
CY2018 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
1264000 | shares |
CY2018 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
2.1 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
|
880000 | shares |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
|
2.64 | |
CY2018Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
12210000 | shares |
CY2018Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
2.96 | |
CY2018 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P7Y9M18D | |
CY2018Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
64590000 | USD |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
|
2516000 | shares |
CY2019 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
10.87 | |
CY2019 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
2650000 | shares |
CY2019 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
2.45 | |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
|
807000 | shares |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
|
5.10 | |
CY2019Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
11269000 | shares |
CY2019Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
4.68 | |
CY2019 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P7Y3M18D | |
CY2019Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
173471000 | USD |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
|
252000 | shares |
CY2020 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
12.96 | |
CY2020 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
4360000 | shares |
CY2020 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
3.46 | |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
|
198000 | shares |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
|
8.79 | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
6963000 | shares |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
5.63 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P6Y8M12D | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
569094000 | USD |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber
|
4214000 | shares |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice
|
3.71 | |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1
|
P5Y9M18D | |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
|
352535000 | USD |
CY2020Q4 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Unvested Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedExercisableNumber
|
320000 | shares |
CY2020Q4 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Unvested Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedExercisableWeightedAverageExercisePrice
|
6.23 | |
CY2020 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Unvested Exercisable Weighted Average Remaining Contractual Term
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedExercisableWeightedAverageRemainingContractualTerm
|
P7Y8M12D | |
CY2020Q4 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Unvested Exercisable Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedExercisableAggregateIntrinsicValue
|
25973000 | USD |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
200900000 | USD |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
32600000 | USD |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
3000000.0 | USD |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
|
10300000 | USD |
CY2019 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
|
6100000 | USD |
CY2018 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
|
3600000 | USD |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
86.77 | |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
5.77 | |
CY2018 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
1.78 | |
CY2020Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
|
28600000 | USD |
CY2020Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
90977 | shares |
CY2019Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
199895 | shares |
CY2019Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
200000 | shares |
CY2018Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
245000 | shares |
CY2017Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
138000 | shares |
CY2020 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Exercised Number Of Shares
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedExercisedNumberOfShares
|
0 | shares |
CY2019 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Exercised Number Of Shares
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedExercisedNumberOfShares
|
117000 | shares |
CY2018 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Exercised Number Of Shares
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedExercisedNumberOfShares
|
238000 | shares |
CY2020 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
|
109000 | shares |
CY2019 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
|
162000 | shares |
CY2018 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
|
120000 | shares |
CY2020 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Repurchased In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedRepurchasedInPeriod
|
0 | shares |
CY2019 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Repurchased In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedRepurchasedInPeriod
|
0 | shares |
CY2018 | fsly |
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Repurchased In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedRepurchasedInPeriod
|
11000 | shares |
CY2020Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
91000 | shares |
CY2019Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
200000 | shares |
CY2018Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
|
245000 | shares |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
|
||
CY2020Q1 | fsly |
Number Of Shares Issued For Each Performance Based Stock Unit
NumberOfSharesIssuedForEachPerformanceBasedStockUnit
|
1 | |
CY2020 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
|
0 | |
CY2020 | fsly |
Amount Withheld In Contributions For Employee Stock Purchase Plan
AmountWithheldInContributionsForEmployeeStockPurchasePlan
|
9600000 | USD |
CY2019 | fsly |
Amount Withheld In Contributions For Employee Stock Purchase Plan
AmountWithheldInContributionsForEmployeeStockPurchasePlan
|
5500000 | USD |
CY2020 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
64433000 | USD |
CY2019 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
12145000 | USD |
CY2018 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
4079000 | USD |
CY2020 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
2000000.0 | USD |
CY2019 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
400000 | USD |
CY2018 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
0 | USD |
CY2020 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
12471000 | shares |
CY2019 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
13540000 | shares |
CY2020 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
-86842000 | USD |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
-30970000 | USD |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
-20644000 | USD |
CY2020 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
|
-20570000 | USD |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
|
-20088000 | USD |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
|
-10291000 | USD |
CY2020 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
-107412000 | USD |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
-51058000 | USD |
CY2020 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
0 | USD |
CY2019 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
0 | USD |
CY2018 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
0 | USD |
CY2020 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
420000 | USD |
CY2019 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
106000 | USD |
CY2018 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
81000 | USD |
CY2020 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
1050000 | USD |
CY2019 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
386000 | USD |
CY2018 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
104000 | USD |
CY2020 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-10631000 | USD |
CY2019 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
0 | USD |
CY2018 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
0 | USD |
CY2020 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-2319000 | USD |
CY2019 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
0 | USD |
CY2018 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
0 | USD |
CY2020 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
0 | USD |
CY2019 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
0 | USD |
CY2018 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
0 | USD |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-11480000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
492000 | USD |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
185000 | USD |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
|
0.02 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
|
0 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
|
0 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
-0.35 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
-0.12 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
-0.11 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
|
-0.05 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
|
-0.08 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
|
-0.07 | |
CY2020 | fsly |
Effective Income Tax Rate Reconciliation Acquisition Related Expenses Percent
EffectiveIncomeTaxRateReconciliationAcquisitionRelatedExpensesPercent
|
-0.02 | |
CY2019 | fsly |
Effective Income Tax Rate Reconciliation Acquisition Related Expenses Percent
EffectiveIncomeTaxRateReconciliationAcquisitionRelatedExpensesPercent
|
0 | |
CY2018 | fsly |
Effective Income Tax Rate Reconciliation Acquisition Related Expenses Percent
EffectiveIncomeTaxRateReconciliationAcquisitionRelatedExpensesPercent
|
0 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
|
0.30 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
|
0 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
|
0 | |
CY2020 | us-gaap |
Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
|
0 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
|
-0.02 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
|
-0.04 | |
CY2020 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.11 | |
CY2019 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
-0.01 | |
CY2018 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
-0.01 | |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-11500000 | USD |
CY2020 | fsly |
Income Tax Benefit Gross
IncomeTaxBenefitGross
|
13000000.0 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
|
941000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
|
1839000 | USD |
CY2020Q4 | fsly |
Deferred Tax Asset Lease Liability
DeferredTaxAssetLeaseLiability
|
17481000 | USD |
CY2019Q4 | fsly |
Deferred Tax Asset Lease Liability
DeferredTaxAssetLeaseLiability
|
0 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
3969000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
1116000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
109281000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
30750000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Property Plant And Equipment
DeferredTaxAssetsPropertyPlantAndEquipment
|
576000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Property Plant And Equipment
DeferredTaxAssetsPropertyPlantAndEquipment
|
0 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Goodwill And Intangible Assets
DeferredTaxAssetsGoodwillAndIntangibleAssets
|
0 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Goodwill And Intangible Assets
DeferredTaxAssetsGoodwillAndIntangibleAssets
|
642000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
0 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
1753000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
132248000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
36100000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Tax Deferred Income
DeferredTaxLiabilitiesTaxDeferredIncome
|
673000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Tax Deferred Income
DeferredTaxLiabilitiesTaxDeferredIncome
|
0 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Leasing Arrangements
DeferredTaxLiabilitiesLeasingArrangements
|
16160000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Leasing Arrangements
DeferredTaxLiabilitiesLeasingArrangements
|
0 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
0 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
285000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Goodwill And Intangible Assets
DeferredTaxLiabilitiesGoodwillAndIntangibleAssets
|
31188000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Goodwill And Intangible Assets
DeferredTaxLiabilitiesGoodwillAndIntangibleAssets
|
0 | USD |
CY2020Q4 | fsly |
Deferred Tax Liabilities State Taxes
DeferredTaxLiabilitiesStateTaxes
|
4319000 | USD |
CY2019Q4 | fsly |
Deferred Tax Liabilities State Taxes
DeferredTaxLiabilitiesStateTaxes
|
2034000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
133000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
0 | USD |
CY2020Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
52473000 | USD |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
2319000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
80028000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
33781000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
253000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
0 | USD |
CY2020 | us-gaap |
Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
|
46200000 | USD |
CY2019Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
0 | USD |
CY2018Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
0 | USD |
CY2020 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
2328000 | USD |
CY2019 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
0 | USD |
CY2020 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
858000 | USD |
CY2019 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
CY2020Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
3186000 | USD |
CY2019Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
0 | USD |
CY2020Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
3000000.0 | USD |
CY2020Q4 | fsly |
Accrued Payroll Taxes Cares Act
AccruedPayrollTaxesCARESAct
|
3400000 | USD |
CY2020 | us-gaap |
Number Of Reportable Segments
NumberOfReportableSegments
|
1 | segment |
CY2020Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
95979000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
60037000 | USD |