$FSLY
Fastly Inc Stock $fsly

$fsly Overview Financials Valuation SEC Filings Company Website

2020 Q3 Form 10-Q Financial Statement

#000151741320000263 Filed on November 06, 2020

Income Statement

Concept	2020 Q3	2019 Q4	2019 Q3
Revenue	$70.64M	$58.94M	$49.80M
YoY Change	41.85%	44.46%	35.24%
Cost Of Revenue	$29.29M	$25.53M	$22.29M
YoY Change	31.4%	44.16%	33.4%
Gross Profit	$41.35M	$33.41M	$27.51M
YoY Change	50.32%	44.69%	36.78%
Gross Profit Margin	58.53%	56.68%	55.23%
Selling, General & Admin	$46.53M	$34.49M	$28.14M
YoY Change	65.33%	65.5%	51.34%
% of Gross Profit	112.54%	103.23%	102.32%
Research & Development	$18.27M	$12.95M	$12.12M
YoY Change	50.74%	39.1%	31.28%
% of Gross Profit	44.19%	38.76%	44.07%
Depreciation & Amortization	$4.900M	$4.860M	$4.000M
YoY Change	22.5%	32.07%	17.65%
% of Gross Profit	11.85%	14.55%	14.54%
Operating Expenses	$64.80M	$47.44M	$40.26M
YoY Change	60.94%	57.35%	44.68%
Operating Profit	-$23.45M	-$14.03M	-$12.76M
YoY Change	83.82%	98.73%	65.27%
Interest Expense	$410.0K	$470.0K	$621.0K
YoY Change	-33.98%	-304.35%	29.65%
% of Operating Profit
Other Income/Expense, Net	$69.00K	-$200.0K	$109.0K
YoY Change	-36.7%	-1100.0%	-120.57%
Pretax Income	-$23.44M	-$13.76M	-$12.12M
YoY Change	93.46%	89.27%	43.63%
Income Tax	$300.0K	$310.0K	$46.00K
% Of Pretax Income
Net Earnings	-$23.78M	-$14.07M	-$12.16M
YoY Change	95.49%	92.48%	43.31%
Net Earnings / Revenue	-33.66%	-23.87%	-24.43%
Basic Earnings Per Share	-$0.22
Diluted Earnings Per Share	-$0.22	-$149.1K	-$130.4K
COMMON SHARES
Basic Shares Outstanding	105.9M shares
Diluted Shares Outstanding	105.9M shares

Balance Sheet

Concept	2020 Q3	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$402.3M	$131.1M	$207.8M
YoY Change	93.58%	56.75%
Cash & Equivalents	$310.0M	$16.14M	$54.71M
Short-Term Investments	$92.30M	$115.0M	$153.1M
Other Short-Term Assets	$84.90M	$81.10M	$14.20M
YoY Change	497.89%
Inventory
Prepaid Expenses
Receivables	$42.59M	$37.14M	$33.91M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$529.7M	$249.3M	$255.9M
YoY Change	106.98%	112.61%
LONG-TERM ASSETS
Property, Plant & Equipment	$83.50M	$60.04M	$56.64M
YoY Change	47.42%	41.75%
Goodwill	$362.0K	$372.0K	$348.0K
YoY Change	4.02%	3.33%
Intangibles	$2.792M	$1.125M	$1.161M
YoY Change	140.48%	84.43%
Long-Term Investments
YoY Change
Other Assets	$15.15M	$10.11M	$13.24M
YoY Change	14.41%	367.5%
Total Long-Term Assets	$101.8M	$71.65M	$71.39M
YoY Change	42.6%	57.51%
TOTAL ASSETS
Total Short-Term Assets	$529.7M	$249.3M	$255.9M
Total Long-Term Assets	$101.8M	$71.65M	$71.39M
Total Assets	$631.5M	$321.0M	$327.3M
YoY Change	92.94%	97.21%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.27M	$4.602M	$6.796M
YoY Change	80.59%	97.26%
Accrued Expenses	$38.56M	$19.88M	$23.47M
YoY Change	64.33%	27.96%
Deferred Revenue	$42.00K	$317.0K
YoY Change		-80.46%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$6.060M	$4.472M	$13.51M
YoY Change	-55.13%	-60.67%
Total Short-Term Liabilities	$66.45M	$37.12M	$45.38M
YoY Change	46.43%	16.92%
LONG-TERM LIABILITIES
Long-Term Debt	$26.01M	$20.08M	$15.55M
YoY Change	67.3%	-49.08%
Other Long-Term Liabilities	$3.944M	$1.038M	$6.983M
YoY Change	-43.52%	60.43%
Total Long-Term Liabilities	$29.95M	$21.12M	$22.53M
YoY Change	32.95%	-47.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$66.45M	$37.12M	$45.38M
Total Long-Term Liabilities	$29.95M	$21.12M	$22.53M
Total Liabilities	$96.40M	$63.32M	$67.91M
YoY Change	41.96%	-15.69%
SHAREHOLDERS EQUITY
Retained Earnings	-$242.2M	-$192.0M	-$177.9M
YoY Change	36.14%	31.35%
Common Stock	$2.000K	$2.000K	$2.000K
YoY Change	0.0%	100.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$0.00	$2.109M
YoY Change		-100.0%
Treasury Stock Shares
Shareholders Equity	$534.9M	$257.7M	$259.4M
YoY Change
Total Liabilities & Shareholders Equity	$631.5M	$321.0M	$327.3M
YoY Change	92.94%	97.21%

Cashflow Statement

Concept	2020 Q3	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	-$23.78M	-$14.07M	-$12.16M
YoY Change	95.49%	92.48%	43.31%
Depreciation, Depletion And Amortization	$4.900M	$4.860M	$4.000M
YoY Change	22.5%	32.07%	17.65%
Cash From Operating Activities	$27.20M	-$3.060M	-$12.59M
YoY Change	-316.04%	287.34%	247.79%
INVESTING ACTIVITIES
Capital Expenditures	-$13.80M	-$5.850M	-$4.380M
YoY Change	215.07%	-20.19%	75.2%
Acquisitions
YoY Change
Other Investing Activities	$34.04M	$38.32M	-$120.9M
YoY Change	-128.16%	-2779.72%	243.38%
Cash From Investing Activities	$20.24M	$32.48M	-$125.3M
YoY Change	-116.16%	-470.78%	232.28%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	5.190M	1.930M	-20.91M
YoY Change	-124.82%	-92.37%	-1918.26%
NET CHANGE
Cash From Operating Activities	27.20M	-3.060M	-12.59M
Cash From Investing Activities	20.24M	32.48M	-125.3M
Cash From Financing Activities	5.190M	1.930M	-20.91M
Net Change In Cash	52.63M	31.35M	-158.8M
YoY Change	-133.15%	98.92%	295.25%
FREE CASH FLOW
Cash From Operating Activities	$27.20M	-$3.060M	-$12.59M
Capital Expenditures	-$13.80M	-$5.850M	-$4.380M
Free Cash Flow	$41.00M	$2.790M	-$8.210M
YoY Change	-599.39%	-57.34%	633.04%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001517413
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
CY2019Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.5
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-38897
	dei	Entity Registrant Name EntityRegistrantName	FASTLY, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	27-5411834
	dei	Entity Address Address Line1 EntityAddressAddressLine1	475 Brannan Street, Suite 300
	dei	Entity Address City Or Town EntityAddressCityOrTown	San Francisco
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	94107
	dei	City Area Code CityAreaCode	844
	dei	Local Phone Number LocalPhoneNumber	432-7859
	dei	Security12b Title Security12bTitle	Class A Common Stock, $0.00002 par value
	dei	Trading Symbol TradingSymbol	FSLY
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2019Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	296000	USD
CY2019Q3	fsly	Stock Issued During Period Value Vesting Of Early Exercised Stock Options StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions	155000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3840000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-12163000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-35000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	259415000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	257652000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	274177000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	12953000	USD
	fsly	Stock Issued During Period Value Vesting Of Early Exercised Stock Options StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions	401000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	4247000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	35990000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-50228000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-72000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	535120000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	-131927000	USD
	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	219584000	USD
	fsly	Adjustments To Additional Paid In Capital Conversion Of Preferred Stock Warrants AdjustmentsToAdditionalPaidInCapitalConversionOfPreferredStockWarrants	5665000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	186912000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2828000	USD
	fsly	Stock Issued During Period Value Vesting Of Early Exercised Stock Options StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions	465000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7550000	USD
	fsly	Stockholders Equity Note Repayment StockholdersEquityNoteRepayment	74000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-37477000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	14000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	259415000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-50228000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-37477000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14411000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	11693000	USD
	fsly	Amortization Of Deferred Rent AmortizationOfDeferredRent	2941000	USD
	fsly	Amortization Of Deferred Rent AmortizationOfDeferredRent	5181000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	58000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1884000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	2375000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1690000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	34752000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7550000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1212000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	344000	USD
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	0	USD
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	2404000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-207000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	502000	USD
	fsly	Interest Paidon Capital Lease InterestPaidonCapitalLease	454000	USD
	fsly	Interest Paidon Capital Lease InterestPaidonCapitalLease	269000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	133000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-43000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6669000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9520000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3778000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	5811000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	7410000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	6468000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	7046000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	4579000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	17224000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-2703000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-321000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-861000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	11233000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-28243000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	204361000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	177525000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	143241000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	3578000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	83718000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	68044000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	150000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	24443000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10400000	USD
	us-gaap	Payments For Software PaymentsForSoftware	4082000	USD
	us-gaap	Payments For Software PaymentsForSoftware	3218000	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	1811000	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	636000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-7588000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-120157000	USD
	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	192510000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	274896000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	27488000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	3060000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	905000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	6206000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	3131000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12953000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2828000	USD
	fsly	Proceeds From Stock Options Exercised Early ProceedsFromStockOptionsExercisedEarly	0	USD
	fsly	Proceeds From Stock Options Exercised Early ProceedsFromStockOptionsExercisedEarly	520000	USD
	fsly	Proceeds From Repayment Of Stockholders Note ProceedsFromRepaymentOfStockholdersNote	0	USD
	fsly	Proceeds From Repayment Of Stockholders Note ProceedsFromRepaymentOfStockholdersNote	74000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	290320000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	166218000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-139000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	293826000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	17830000	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
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	380055000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	54793000	USD
	us-gaap	Interest Paid Net InterestPaidNet	758000	USD
	us-gaap	Interest Paid Net InterestPaidNet	4931000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	9613000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	7702000	USD
	fsly	Vestingof Early Exercised Stock Options VestingofEarlyExercisedStockOptions	401000	USD
	fsly	Vestingof Early Exercised Stock Options VestingofEarlyExercisedStockOptions	465000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	5439000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	4750000	USD
	fsly	Change In Other Assets From Change In Accounting Principle ChangeInOtherAssetsFromChangeInAccountingPrinciple	0	USD
	fsly	Change In Other Assets From Change In Accounting Principle ChangeInOtherAssetsFromChangeInAccountingPrinciple	5727000	USD
	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	5665000	USD
	fsly	Cashless Exercise Of Common Stock Warrants CashlessExerciseOfCommonStockWarrants	1557000	USD
	fsly	Cashless Exercise Of Common Stock Warrants CashlessExerciseOfCommonStockWarrants	1036000	USD
	fsly	Initial Public Offering Costs Incurred But Not Yet Paid InitialPublicOfferingCostsIncurredButNotYetPaid	0	USD
	fsly	Initial Public Offering Costs Incurred But Not Yet Paid InitialPublicOfferingCostsIncurredButNotYetPaid	1148000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1238000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	309968000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	54706000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	70087000	USD
CY2019Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	87000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	380055000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	54793000	USD
	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. As of September 30, 2020, our edge network spans 72 Points-of-Presence ("POPs") across 55 markets around the world. 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"><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"><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:36pt"><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 September 30, 2020 and December 31, 2019, we had no 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:36pt"><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><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%">Acquisition of Signal Sciences</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On August 27, 2020, we entered into an Agreement and Plan of Merger and Reorganization (the “Merger Agreement”) to acquire Signal Sciences. The acquisition closed on October 1, 2020 and as a result of the acquisition, Signal Sciences became a wholly owned subsidiary of Fastly, Inc. Please refer to Note 14 — Subsequent Events for details on the subsequent closing of the merger on October 1, 2020.</span></div>
CY2020Q3	fsly	Pointsof Presence PointsofPresence	72	location
CY2020Q3	fsly	Operating Markets OperatingMarkets	55	market
CY2019Q2	fsly	Convertible Preferred Stock Number Of Series ConvertiblePreferredStockNumberOfSeries	7	series_of_stock
CY2019Q2	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.00002
CY2020Q3	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	0	shares
CY2019Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	0	shares
CY2020Q3	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	0	shares
CY2019Q4	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	0	shares
	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 interim unaudited condensed consolidated financial statements and accompanying notes have been prepared in accordance with United States generally accepted accounting principles ("U.S. GAAP") along with instructions to Form 10-Q and Article 10 of Securities and Exchange Commission ("SEC") Regulation S-X. </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. We have made certain presentation changes to distinguish and disclose as a separate line item, the non-cash amortization </span></div>expense of our deferred contract costs balance from other assets within operating cash flows in the Condensed Consolidated Statements of Cash Flows.
	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 condensed 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, 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 condensed 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>
	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><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%">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. </span></div>No customer accounted for more than 10% of revenue for both the three months ended September 30, 2020 and September 30, 2019. One customer accounted for 11% of revenue for the nine months ended September 30, 2020. No customer accounted for more than 10% of revenue for the nine months ended September 30, 2019. No customer accounted for more than 10% of the total accounts receivable balance as of September 30, 2020 and December 31, 2019.
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	70638000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	49797000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	208225000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	141526000	USD
CY2020Q3	fsly	Enterprise Customer Threshold EnterpriseCustomerThreshold	100000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	70638000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	49797000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	208225000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	141526000	USD
	us-gaap	Revenue Performance Obligation Description Of Payment Terms RevenuePerformanceObligationDescriptionOfPaymentTerms	Payment terms on invoiced amounts are typically 15 to 45 days.
CY2020Q3	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	403000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	271000	USD
CY2020Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	42000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	317000	USD
CY2020Q3	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	37000	USD
CY2019Q3	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	518000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	310000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1517000	USD
CY2020Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	100000000.0	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	70700000	USD
CY2020Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.80
CY2020Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2020Q3	us-gaap	Capitalized Contract Cost Amortization Period CapitalizedContractCostAmortizationPeriod	P5Y
CY2020Q3	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	11693000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	6804000	USD
CY2020Q3	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	900000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	600000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	2400000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1700000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	0	security
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	309968000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	16142000	USD
CY2020Q3	us-gaap	Short Term Investments ShortTermInvestments	92302000	USD
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	114967000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	92065000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	237000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92302000	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
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	0	security
CY2020Q3	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	36234000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	92302000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	70087000	USD
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	198623000	USD
CY2019Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	4519000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	114967000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	70087000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	189573000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	144982000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	108276000	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	61484000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	48239000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	83498000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60037000	USD
CY2020Q3	us-gaap	Depreciation Depreciation	4900000	USD
CY2019Q3	us-gaap	Depreciation Depreciation	4000000.0	USD
	us-gaap	Depreciation Depreciation	14300000	USD
	us-gaap	Depreciation Depreciation	11600000	USD
CY2020Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	21362000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	8734000	USD
CY2020Q3	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	5324000	USD
CY2019Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	3938000	USD
CY2020Q3	fsly	Accrued Acquisition Related Costs AccruedAcquisitionRelatedCosts	4436000	USD
CY2019Q4	fsly	Accrued Acquisition Related Costs AccruedAcquisitionRelatedCosts	0	USD
CY2020Q3	fsly	Accrued Colocation And Bandwidth Costs AccruedColocationAndBandwidthCosts	3886000	USD
CY2019Q4	fsly	Accrued Colocation And Bandwidth Costs AccruedColocationAndBandwidthCosts	3237000	USD
CY2020Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3551000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3969000	USD
CY2020Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	38559000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	19878000	USD
CY2020Q3	fsly	Liability For Early Exercised Stock Options Current LiabilityForEarlyExercisedStockOptionsCurrent	257000	USD
CY2019Q4	fsly	Liability For Early Exercised Stock Options Current LiabilityForEarlyExercisedStockOptionsCurrent	467000	USD
CY2020Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	42000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	317000	USD
CY2020Q3	fsly	Accrued Computer And Networking Equipment AccruedComputerAndNetworkingEquipment	8977000	USD
CY2019Q4	fsly	Accrued Computer And Networking Equipment AccruedComputerAndNetworkingEquipment	7060000	USD
CY2020Q3	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	279000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	325000	USD
CY2020Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	9555000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	8169000	USD
CY2020Q3	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	3731000	USD
CY2019Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	634000	USD
CY2020Q3	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	213000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	404000	USD
CY2020Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3944000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1038000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	372000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-10000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	362000	USD
CY2020Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	3298000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	506000	USD
CY2020Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2792000	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
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	72000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	298000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	302000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	302000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	292000	USD
CY2020Q3	fsly	Finite Lived Intangible Assets Amortization Expense After Year Four FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour	1158000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2424000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	100000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	100000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	100000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	100000	USD
CY2020Q3	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	20139000	USD
CY2019Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	20081000	USD
CY2020Q3	us-gaap	Capital Lease Obligations CapitalLeaseObligations	11928000	USD
CY2020Q3	us-gaap	Capital Lease Obligations CapitalLeaseObligations	11900000	USD
CY2019Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	9500000	USD
CY2020Q3	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2020Q3	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2020Q3	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	161000	USD
CY2019Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	219000	USD
CY2020Q3	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2019Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2019Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	9549000	USD
CY2020Q3	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	6060000	USD
CY2019Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	4472000	USD
CY2020Q3	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	5868000	USD
CY2019Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	5077000	USD
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	26007000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	25158000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	1872000	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Remainder Of Fiscal Year LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueRemainderOfFiscalYear	926000	USD
CY2020Q3	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Remainderof Fiscal Year LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueRemainderofFiscalYear	2798000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Repayments Of Principal In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths	6921000	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueInNextTwelveMonths	1350000	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Total Payments Due In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsMaturitiesTotalPaymentsDueInNextTwelveMonths	8271000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	1100000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Two LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo	25150000	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year Two LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearTwo	982000	USD
CY2020Q3	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Year Two LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearTwo	26132000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Three LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree	1795000	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year Three LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearThree	30000	USD
CY2020Q3	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Year Three LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearThree	1825000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearFour	0	USD
CY2020Q3	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Year Four LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearFour	0	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal After Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFour	0	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year After Four LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearAfterFour	0	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Maturities Total Payments Due Year After Four LongTermDebtAndCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearAfterFour	0	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	35738000	USD
CY2020Q3	fsly	Long Term Debt And Capital Lease Obligations Interest Due LongTermDebtAndCapitalLeaseObligationsInterestDue	3288000	USD
CY2020Q3	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDue	39026000	USD
CY2020Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	400000	USD
CY2019Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	600000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	4800000	USD
CY2020Q3	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2000000.0	USD
CY2019Q3	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1800000	USD
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	6300000	USD
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4900000	USD
CY2020Q3	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	300000	USD
CY2019Q3	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	300000	USD
	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	900000	USD
	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	900000	USD
CY2020Q3	us-gaap	Purchase Obligation Future Minimum Payments Remainder Of Fiscal Year PurchaseObligationFutureMinimumPaymentsRemainderOfFiscalYear	12388000	USD
CY2020Q3	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	35411000	USD
CY2020Q3	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	10548000	USD
CY2020Q3	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	3141000	USD
CY2020Q3	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	523000	USD
CY2020Q3	fsly	Purchase Obligation Due After Fourth Year PurchaseObligationDueAfterFourthYear	816000	USD
CY2020Q3	us-gaap	Purchase Obligation PurchaseObligation	62827000	USD
CY2020Q3	fsly	Loss Contingency Pending Claims Number Consolidated LossContingencyPendingClaimsNumberConsolidated	2	numberOfLawsuits
CY2020Q3	us-gaap	Loss Contingency Pending Claims Number LossContingencyPendingClaimsNumber	1	numberOfLawsuits
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
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
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
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3803000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	3.36
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	176000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	8.80
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7290000	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.28
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y9M18D
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	644502000	USD
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	4296000	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	3.41
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P5Y10M24D
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	387817000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	157900000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	12700000	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	6500000	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	4400000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.05
CY2020Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	12400000	USD
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	105847	shares
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	199895	shares
CY2020Q3	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	2000000.0	USD
	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	6100000	USD
CY2019Q3	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	2300000	USD
	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	3100000	USD
CY2020Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12142000	USD
CY2019Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3840000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	34752000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7550000	USD
CY2020Q3	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	600000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1200000	USD
CY2019Q3	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11928000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	13976000	shares
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	300000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1100000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	200000	USD
CY2020Q3	fsly	Accrued Payroll Taxes Cares Act AccruedPayrollTaxesCARESAct	2700000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	83498000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60037000	USD

Files In Submission

Name	View Source	Status
0001517413-20-000263-index-headers.html	Edgar Link	pending
0001517413-20-000263-index.html	Edgar Link	pending
0001517413-20-000263.txt	Edgar Link	pending
0001517413-20-000263-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
fsly-20200930.htm	Edgar Link	pending
fsly-20200930.xsd	Edgar Link	pending
fsly-20200930_cal.xml	Edgar Link	unprocessable
fsly-20200930_def.xml	Edgar Link	unprocessable
fsly-20200930_htm.xml	Edgar Link	completed
fsly-20200930_lab.xml	Edgar Link	unprocessable
fsly-20200930_pre.xml	Edgar Link	unprocessable
fsly-93020x10qex311.htm	Edgar Link	pending
fsly-93020x10qex312.htm	Edgar Link	pending
fsly-93020x10qex321.htm	Edgar Link	pending
fsly-93020x10qex322.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$FSLY
Fastly Inc Stock $fsly

2020 Q3 Form 10-Q Financial Statement

#000151741320000263 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FSLY Fastly Inc Stock $fsly

2020 Q3 Form 10-Q Financial Statement

#000151741320000263 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FSLY
Fastly Inc Stock $fsly