$FSLY
Fastly Inc Stock $fsly

$fsly Overview Financials Valuation SEC Filings Company Website

2020 Q2 Form 10-Q Financial Statement

#000151741320000162 Filed on August 07, 2020

Income Statement

Concept	2020 Q2	2019 Q2	2019 Q1
Revenue	$74.66M	$46.17M	$45.56M
YoY Change	61.7%	34.04%	40.17%
Cost Of Revenue	$29.70M	$20.78M	$19.72M
YoY Change	42.88%	32.42%	28.21%
Gross Profit	$44.97M	$25.39M	$25.84M
YoY Change	77.11%	35.39%	51.01%
Gross Profit Margin	60.23%	54.99%	56.72%
Selling, General & Admin	$42.75M	$25.83M	$23.74M
YoY Change	65.53%	60.38%	31.52%
% of Gross Profit	95.07%	101.72%	91.88%
Research & Development	$16.66M	$11.24M	$10.18M
YoY Change	48.12%	38.83%	27.52%
% of Gross Profit	37.04%	44.29%	39.38%
Depreciation & Amortization	$4.700M	$3.900M	$3.738M
YoY Change	20.51%	18.18%	24.19%
% of Gross Profit	10.45%	15.36%	14.47%
Operating Expenses	$59.40M	$37.07M	$33.92M
YoY Change	60.25%	53.17%	30.29%
Operating Profit	-$14.44M	-$11.68M	-$8.077M
YoY Change	23.6%	114.37%	-9.45%
Interest Expense	$371.0K	$2.989M	$1.235M
YoY Change	-87.59%	732.59%	-614.58%
% of Operating Profit
Other Income/Expense, Net	-$53.00K	-$1.696M	-$776.0K
YoY Change	-96.88%	1111.43%	762.22%
Pretax Income	-$14.48M	-$15.51M	-$9.672M
YoY Change	-6.58%	167.28%	4.56%
Income Tax	$0.00	$100.0K	$100.0K
% Of Pretax Income
Net Earnings	-$14.46M	-$15.59M	-$9.727M
YoY Change	-7.23%	167.08%	4.48%
Net Earnings / Revenue	-19.37%	-33.76%	-21.35%
Basic Earnings Per Share	-$0.14
Diluted Earnings Per Share	-$0.14	-$171.9K	-$107.3K
COMMON SHARES
Basic Shares Outstanding	99.84M shares
Diluted Shares Outstanding	99.84M shares

Balance Sheet

Concept	2020 Q2	2019 Q2	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$384.0M	$245.6M	$67.10M
YoY Change	56.35%
Cash & Equivalents	$257.4M	$213.5M	$21.36M
Short-Term Investments	$126.6M	$32.16M	$47.60M
Other Short-Term Assets	$83.10M	$12.20M	$11.20M
YoY Change	581.15%
Inventory
Prepaid Expenses
Receivables	$58.33M	$28.54M	$28.70M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$525.4M	$286.4M	$107.0M
YoY Change	83.49%
LONG-TERM ASSETS
Property, Plant & Equipment	$65.84M	$55.61M	$47.40M
YoY Change	18.39%
Goodwill	$347.0K	$359.0K
YoY Change	-3.34%
Intangibles	$2.864M	$1.198M
YoY Change	139.07%
Long-Term Investments
YoY Change
Other Assets	$13.40M	$12.86M	$8.400M
YoY Change	4.23%
Total Long-Term Assets	$82.45M	$70.02M	$56.70M
YoY Change	17.74%
TOTAL ASSETS
Total Short-Term Assets	$525.4M	$286.4M	$107.0M
Total Long-Term Assets	$82.45M	$70.02M	$56.70M
Total Assets	$607.9M	$356.4M	$163.7M
YoY Change	70.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.087M	$5.753M	$3.900M
YoY Change	5.81%
Accrued Expenses	$22.63M	$25.10M	$10.70M
YoY Change	-9.84%
Deferred Revenue	$48.00K
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$5.188M	$32.82M	$12.80M
YoY Change	-84.19%
Total Short-Term Liabilities	$38.31M	$65.27M	$32.70M
YoY Change	-41.3%
LONG-TERM LIABILITIES
Long-Term Debt	$24.86M	$17.88M	$39.40M
YoY Change	39.04%
Other Long-Term Liabilities	$2.533M	$5.911M	$5.600M
YoY Change	-57.15%
Total Long-Term Liabilities	$27.39M	$23.79M	$45.00M
YoY Change	15.14%
TOTAL LIABILITIES
Total Short-Term Liabilities	$38.31M	$65.27M	$32.70M
Total Long-Term Liabilities	$27.39M	$23.79M	$45.00M
Total Liabilities	$65.70M	$89.05M	$77.70M
YoY Change	-26.23%
SHAREHOLDERS EQUITY
Retained Earnings	-$218.5M	-$165.8M
YoY Change	31.78%
Common Stock	$2.000K	$2.000K
YoY Change	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$2.109M
YoY Change
Treasury Stock Shares
Shareholders Equity	$541.9M	$267.3M	-$133.6M
YoY Change
Total Liabilities & Shareholders Equity	$607.9M	$356.4M	$163.7M
YoY Change	70.57%

Cashflow Statement

Concept	2020 Q2	2019 Q2	2019 Q1
OPERATING ACTIVITIES
Net Income	-$14.46M	-$15.59M	-$9.727M
YoY Change	-7.23%	167.08%	4.48%
Depreciation, Depletion And Amortization	$4.700M	$3.900M	$3.738M
YoY Change	20.51%	18.18%	24.19%
Cash From Operating Activities	-$8.780M	-$5.570M	-$10.08M
YoY Change	57.63%	-23.17%	89.17%
INVESTING ACTIVITIES
Capital Expenditures	-$4.930M	-$5.090M	$4.025M
YoY Change	-3.14%	2.21%	-182.99%
Acquisitions
YoY Change
Other Investing Activities	-$32.69M	$13.78M	$1.190M
YoY Change	-337.23%	113.98%	-57.95%
Cash From Investing Activities	-$37.62M	$8.700M	-$3.594M
YoY Change	-532.41%	500.0%	78.81%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	281.4M	189.0M	-$1.923M
YoY Change	48.86%	336.5%	1379.23%
NET CHANGE
Cash From Operating Activities	-8.780M	-5.570M	-$10.08M
Cash From Investing Activities	-37.62M	8.700M	-$3.594M
Cash From Financing Activities	281.4M	189.0M	-$1.923M
Net Change In Cash	235.0M	192.2M	-$15.61M
YoY Change	22.29%	412.34%	108.94%
FREE CASH FLOW
Cash From Operating Activities	-$8.780M	-$5.570M	-$10.08M
Capital Expenditures	-$4.930M	-$5.090M	$4.025M
Free Cash Flow	-$3.850M	-$480.0K	-$14.11M
YoY Change	702.08%	-78.85%	2839.17%

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	Q2
	dei	Amendment Flag AmendmentFlag	false
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-06-30
	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
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CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2654000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1816000	USD
	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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CY2019Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	186912000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1893000	USD
CY2019Q2	fsly	Stock Issued During Period Value Vesting Of Early Exercised Stock Options StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions	155000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2243000	USD
CY2019Q2	fsly	Stockholders Equity Note Repayment StockholdersEquityNoteRepayment	62000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-15587000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	267322000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	257652000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	274177000	USD
	fsly	Stock Issued During Period Value Vesting Of Early Exercised Stock Options StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions	274000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	4247000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	8831000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	23245000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-26450000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	189000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	542165000	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	2532000	USD
	fsly	Stock Issued During Period Value Vesting Of Early Exercised Stock Options StockIssuedDuringPeriodValueVestingOfEarlyExercisedStockOptions	310000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3710000	USD
	fsly	Stockholders Equity Note Repayment StockholdersEquityNoteRepayment	74000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-25314000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	49000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	267322000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-26450000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-25314000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9444000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	7624000	USD
	fsly	Amortization Of Deferred Rent AmortizationOfDeferredRent	1491000	USD
	fsly	Amortization Of Deferred Rent AmortizationOfDeferredRent	3985000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	38000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1816000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	22610000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	3710000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1016000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	69000	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	20000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	400000	USD
	fsly	Interest Paidon Capital Lease InterestPaidonCapitalLease	268000	USD
	fsly	Interest Paidon Capital Lease InterestPaidonCapitalLease	171000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-39000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	22211000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	3882000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1983000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3209000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	3288000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4966000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1364000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3270000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2626000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	287000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-336000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-910000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-15967000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-15648000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	56187000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	32662000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	0	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	44901000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	44056000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12550000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7522000	USD
	us-gaap	Payments For Software PaymentsForSoftware	2181000	USD
	us-gaap	Payments For Software PaymentsForSoftware	1707000	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	-27828000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	5107000	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	4988000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	2591000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	676000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	4164000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	810000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	8831000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2530000	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	285127000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	187127000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-56000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	241276000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	176587000	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
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	327505000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	213550000	USD
	us-gaap	Interest Paid Net InterestPaidNet	348000	USD
	us-gaap	Interest Paid Net InterestPaidNet	4435000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	910000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3885000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	8035000	USD
	fsly	Vestingof Early Exercised Stock Options VestingofEarlyExercisedStockOptions	274000	USD
	fsly	Vestingof Early Exercised Stock Options VestingofEarlyExercisedStockOptions	310000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	2969000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	3740000	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	0	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	1945000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	635000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
	fsly	Stock Issuance Costs Incurred But Not Yet Paid StockIssuanceCostsIncurredButNotYetPaid	546000	USD
	fsly	Stock Issuance Costs Incurred But Not Yet Paid StockIssuanceCostsIncurredButNotYetPaid	0	USD
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	257418000	USD
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	213463000	USD
CY2020Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	70087000	USD
CY2019Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	87000	USD
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	327505000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	213550000	USD
	us-gaap	Nature Of Operations NatureOfOperations	Nature of Business<div style="text-indent:27pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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 June 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="text-indent:27pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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="background-color:rgb(255,255,255, 0.0);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="background-color:rgb(255,255,255, 0.0);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="background-color:rgb(255,255,255, 0.0);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="background-color:rgb(255,255,255, 0.0);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="text-indent:36pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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. </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;"> </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">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 June 30, 2020 and December 31, 2019, we had no convertible preferred stock issued or outstanding. </span></div><div style="margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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="text-indent:36pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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>
CY2020Q2	fsly	Pointsof Presence PointsofPresence	72	location
CY2020Q2	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
CY2019Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	0	shares
CY2020Q2	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	0	shares
CY2019Q4	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	0	shares
CY2020Q2	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	0	shares
	us-gaap	Basis Of Accounting BasisOfAccounting	Basis of PresentationThe 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.
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	0	security
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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="text-indent:27pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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="text-indent:27pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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="background-color:rgb(255,255,255, 0.0);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="text-indent:27pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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="text-indent:27pt;margin-bottom:12pt;"><span style="background-color:rgb(255,255,255, 0.0);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>One customer accounted for 13% and 12% of revenue for the three and six months ended June 30, 2020, and 20% of the total accounts receivable balance as of June 30, 2020. No customer accounted for more than 10% of revenue for the three and six months ended June 30, 2019, or more than 10% of the total accounts receivable balance as of December 31, 2019
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	74663000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	46173000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	137587000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	91729000	USD
CY2020Q2	fsly	Enterprise Customer Threshold EnterpriseCustomerThreshold	100000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	74663000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	46173000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	137587000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	91729000	USD
CY2020Q2	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	322000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	271000	USD
CY2020Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	48000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	317000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	834000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	114967000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	0	security
CY2019Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1069000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	301000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	2006000	USD
CY2020Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	76700000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	70700000	USD
CY2020Q2	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.87
CY2020Q2	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2020Q2	us-gaap	Capitalized Contract Cost Amortization Period CapitalizedContractCostAmortizationPeriod	P5Y
CY2020Q2	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	9698000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	6804000	USD
CY2020Q2	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	800000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	600000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1500000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1100000	USD
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	257418000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	16142000	USD
CY2020Q2	us-gaap	Short Term Investments ShortTermInvestments	126607000	USD
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	114967000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	126176000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	431000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	126607000	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
CY2020Q2	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	251636000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	126607000	USD
CY2020Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	70087000	USD
CY2020Q2	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	448330000	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
CY2020Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	122831000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	108276000	USD
CY2020Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	56995000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	48239000	USD
CY2020Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	65836000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60037000	USD
CY2020Q2	us-gaap	Depreciation Depreciation	4700000	USD
CY2019Q2	us-gaap	Depreciation Depreciation	3900000	USD
	us-gaap	Depreciation Depreciation	9400000	USD
	us-gaap	Depreciation Depreciation	7600000	USD
CY2020Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	9176000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	8734000	USD
CY2020Q2	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	4792000	USD
CY2019Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	3938000	USD
CY2020Q2	fsly	Accrued Colocation And Bandwidth Costs AccruedColocationAndBandwidthCosts	4059000	USD
CY2019Q4	fsly	Accrued Colocation And Bandwidth Costs AccruedColocationAndBandwidthCosts	3237000	USD
CY2020Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4604000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3969000	USD
CY2020Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	22631000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	19878000	USD
CY2020Q2	fsly	Liability For Early Exercised Stock Options Current LiabilityForEarlyExercisedStockOptionsCurrent	321000	USD
CY2019Q4	fsly	Liability For Early Exercised Stock Options Current LiabilityForEarlyExercisedStockOptionsCurrent	467000	USD
CY2020Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	48000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	317000	USD
CY2020Q2	fsly	Accrued Computer And Networking Equipment AccruedComputerAndNetworkingEquipment	3775000	USD
CY2019Q4	fsly	Accrued Computer And Networking Equipment AccruedComputerAndNetworkingEquipment	7060000	USD
CY2020Q2	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	258000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	325000	USD
CY2020Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	4402000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	8169000	USD
CY2020Q2	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	2256000	USD
CY2019Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	634000	USD
CY2020Q2	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	277000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	404000	USD
CY2020Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2533000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1038000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	302000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	372000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-25000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	347000	USD
CY2020Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	3298000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	434000	USD
CY2020Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2864000	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
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	151000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	302000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	296000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	289000	USD
CY2020Q2	fsly	Finite Lived Intangible Assets Amortization Expense After Year Four FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour	1156000	USD
CY2020Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2496000	USD
CY2020Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	100000	USD
CY2019Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	100000	USD
CY2020Q2	us-gaap	Capital Lease Obligations CapitalLeaseObligations	9900000	USD
CY2019Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	9500000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2020Q2	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2020Q2	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	20300000	USD
CY2020Q2	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	180000	USD
CY2019Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	219000	USD
CY2020Q2	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2019Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2020Q2	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	20120000	USD
CY2019Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	20081000	USD
CY2020Q2	us-gaap	Capital Lease Obligations CapitalLeaseObligations	9926000	USD
CY2019Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	9549000	USD
CY2020Q2	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	5188000	USD
CY2019Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	4472000	USD
CY2020Q2	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	4738000	USD
CY2019Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	5077000	USD
CY2020Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	24858000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	25158000	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearFour	0	USD
CY2020Q2	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	3176000	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Remainder Of Fiscal Year LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueRemainderOfFiscalYear	1083000	USD
CY2020Q2	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Remainderof Fiscal Year LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueRemainderofFiscalYear	4259000	USD
CY2020Q2	us-gaap	Long Term Debt And Capital Lease Obligations Repayments Of Principal In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths	5795000	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueInNextTwelveMonths	1216000	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Total Payments Due In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsMaturitiesTotalPaymentsDueInNextTwelveMonths	7011000	USD
CY2020Q2	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Two LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo	23966000	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year Two LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearTwo	904000	USD
CY2020Q2	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Year Two LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearTwo	24870000	USD
CY2020Q2	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Three LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree	868000	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year Three LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearThree	11000	USD
CY2020Q2	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Year Three LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearThree	879000	USD
CY2020Q2	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2020Q2	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due Year Four LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearFour	0	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal After Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFour	0	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Interest Due Year After Four LongTermDebtAndCapitalLeaseObligationsMaturitiesInterestDueYearAfterFour	0	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Maturities Total Payments Due Year After Four LongTermDebtAndCapitalLeaseObligationsMaturitiesTotalPaymentsDueYearAfterFour	0	USD
CY2020Q2	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	33805000	USD
CY2020Q2	fsly	Long Term Debt And Capital Lease Obligations Interest Due LongTermDebtAndCapitalLeaseObligationsInterestDue	3214000	USD
CY2020Q2	fsly	Longterm Debtand Capital Lease Obligations Maturities Total Payments Due LongtermDebtandCapitalLeaseObligationsMaturitiesTotalPaymentsDue	37019000	USD
CY2020Q2	us-gaap	Interest Expense Debt InterestExpenseDebt	400000	USD
CY2019Q2	us-gaap	Interest Expense Debt InterestExpenseDebt	3000000.0	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	700000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	4200000	USD
CY2020Q2	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2000000.0	USD
CY2019Q2	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1800000	USD
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4300000	USD
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3500000	USD
CY2020Q2	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	300000	USD
CY2019Q2	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	300000	USD
	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	600000	USD
	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	600000	USD
CY2020Q2	us-gaap	Purchase Obligation Future Minimum Payments Remainder Of Fiscal Year PurchaseObligationFutureMinimumPaymentsRemainderOfFiscalYear	27606000	USD
CY2020Q2	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	22664000	USD
CY2020Q2	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	9732000	USD
CY2020Q2	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	1756000	USD
CY2020Q2	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	245000	USD
CY2020Q2	fsly	Purchase Obligation Due After Fourth Year PurchaseObligationDueAfterFourthYear	73000	USD
CY2020Q2	us-gaap	Purchase Obligation PurchaseObligation	62076000	USD
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 Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	665911000	USD
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	3.14
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P6Y1M6D
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	2823000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	3.06
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	116000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	7.81
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8330000	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.19
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	4799000	shares
CY2020Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	393468000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	76300000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	10900000	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	4600000	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	2800000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.36
CY2020Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	14200000	USD
CY2020Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	134577	shares
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	199895	shares
CY2019Q2	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0	USD
CY2020Q2	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	1900000	USD
	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	4100000	USD
CY2019Q2	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	800000	USD
	fsly	Amount Withheld In Contributions For Employee Stock Purchase Plan AmountWithheldInContributionsForEmployeeStockPurchasePlan	800000	USD
CY2020Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	16281000	USD
CY2019Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2243000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	22610000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3710000	USD
CY2020Q2	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	400000	USD
	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	0	USD
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	13747000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	12943000	shares
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0.0	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	100000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	100000	USD
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CY2020Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	65836000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60037000	USD

Files In Submission

Name	View Source	Status
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0001517413-20-000162-index.html	Edgar Link	pending
0001517413-20-000162.txt	Edgar Link	pending
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ex101-transitionandsep.htm	Edgar Link	pending
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ex33-amendedandrestatedb001.jpg	Edgar Link	pending
ex33-amendedandrestatedb002.jpg	Edgar Link	pending
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$FSLY
Fastly Inc Stock $fsly

2020 Q2 Form 10-Q Financial Statement

#000151741320000162 Filed on August 07, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FSLY Fastly Inc Stock $fsly

2020 Q2 Form 10-Q Financial Statement

#000151741320000162 Filed on August 07, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FSLY
Fastly Inc Stock $fsly