$UPWK
UPWORK, INC Stock $upwk

$upwk Overview Financials Valuation SEC Filings Company Website

2020 Form 10-K Financial Statement

#000162747521000015 Filed on February 24, 2021

Income Statement

Concept	2020	2019 Q4	2019
Revenue	$373.6M	$78.60M	$300.6M
YoY Change	24.31%	16.79%	18.63%
Cost Of Revenue	$2.900M	$22.90M	$900.0K
YoY Change	222.22%	9.57%	-98.9%
Gross Profit	$269.4M	$55.70M	$212.4M
YoY Change	26.81%	19.78%	23.57%
Gross Profit Margin	72.09%	70.87%	70.67%
Selling, General & Admin	$204.7M	$47.80M	$163.2M
YoY Change	25.44%	38.95%	33.46%
% of Gross Profit	76.01%	85.82%	76.84%
Research & Development	$83.47M	$16.30M	$64.03M
YoY Change	30.37%	10.14%	15.39%
% of Gross Profit	30.99%	29.26%	30.14%
Depreciation & Amortization	$3.600M	$2.160M	$2.800M
YoY Change	28.57%	53.19%	27.27%
% of Gross Profit	1.34%	3.88%	1.32%
Operating Expenses	$291.8M	$64.10M	$231.2M
YoY Change	26.22%	30.55%	25.89%
Operating Profit	-$22.41M	-$8.400M	-$18.73M
YoY Change	19.62%	223.08%	59.94%
Interest Expense	$778.0K	-$300.0K	$1.306M
YoY Change	-40.43%	-25.0%	-35.92%
% of Operating Profit
Other Income/Expense, Net	$469.0K	$1.600M	$3.407M
YoY Change	-86.23%	-169.57%	-155.47%
Pretax Income	-$22.72M	-$7.100M	-$16.63M
YoY Change	36.59%	31.48%	-16.39%
Income Tax	$150.0K	$0.00	$28.00K
% Of Pretax Income
Net Earnings	-$22.87M	-$7.100M	-$16.66M
YoY Change	37.27%	31.48%	-16.32%
Net Earnings / Revenue	-6.12%	-9.03%	-5.54%
Basic Earnings Per Share	-$0.19		-$0.15
Diluted Earnings Per Share	-$0.19	-$63.00K	-$0.15
COMMON SHARES
Basic Shares Outstanding	118.7M shares	112.0M shares	109.8M shares
Diluted Shares Outstanding	118.7M shares		109.8M shares

Balance Sheet

Concept	2020	2019 Q4	2019
SHORT-TERM ASSETS
Cash & Short-Term Investments	$169.7M	$133.9M	$133.9M
YoY Change	26.74%	3.72%	3.72%
Cash & Equivalents	$94.10M	$48.39M	$48.40M
Short-Term Investments	$75.60M	$85.50M	$85.50M
Other Short-Term Assets	$144.1M	$116.6M	$116.6M
YoY Change	23.58%	11.58%	11.58%
Inventory
Prepaid Expenses
Receivables	$47.00M	$30.16M	$30.20M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$360.8M	$280.6M	$280.6M
YoY Change	28.58%	9.67%	9.65%
LONG-TERM ASSETS
Property, Plant & Equipment	$47.90M	$21.45M	$43.40M
YoY Change	10.37%	98.37%	301.85%
Goodwill		$118.2M
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$1.700M	$829.0K	$800.0K
YoY Change	112.5%	26.95%	14.29%
Total Long-Term Assets	$168.4M	$165.7M	$165.8M
YoY Change	1.57%	22.15%	22.18%
TOTAL ASSETS
Total Short-Term Assets	$360.8M	$280.6M	$280.6M
Total Long-Term Assets	$168.4M	$165.7M	$165.8M
Total Assets	$529.2M	$446.4M	$446.4M
YoY Change	18.55%	14.0%	13.99%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.500M	$652.0K	$700.0K
YoY Change	828.57%	-68.55%	-66.67%
Accrued Expenses	$32.90M	$18.30M	$18.30M
YoY Change	79.78%	-12.44%	-12.44%
Deferred Revenue		$13.80M
YoY Change		1811.22%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$7.600M	$7.584M	$7.600M
YoY Change	0.0%	33.73%	33.33%
Total Short-Term Liabilities	$198.7M	$149.1M	$149.1M
YoY Change	33.27%	16.85%	16.85%
LONG-TERM LIABILITIES
Long-Term Debt	$3.100M	$10.70M	$10.70M
YoY Change	-71.03%	-41.34%	-41.21%
Other Long-Term Liabilities	$28.00M	$5.973M	$27.20M
YoY Change	2.94%	200.3%	1260.0%
Total Long-Term Liabilities	$31.10M	$16.67M	$37.90M
YoY Change	-17.94%	-17.58%	87.62%
TOTAL LIABILITIES
Total Short-Term Liabilities	$198.7M	$149.1M	$149.1M
Total Long-Term Liabilities	$31.10M	$16.67M	$37.90M
Total Liabilities	$229.9M	$187.0M	$187.0M
YoY Change	22.94%	26.47%	26.52%
SHAREHOLDERS EQUITY
Retained Earnings		-$172.0M
YoY Change		19.83%
Common Stock		$431.4M
YoY Change		11.4%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$299.3M	$259.4M	$259.4M
YoY Change
Total Liabilities & Shareholders Equity	$529.2M	$446.4M	$446.4M
YoY Change	18.55%	14.0%	13.99%

Cashflow Statement

Concept	2020	2019 Q4	2019
OPERATING ACTIVITIES
Net Income	-$22.87M	-$7.100M	-$16.66M
YoY Change	37.27%	31.48%	-16.32%
Depreciation, Depletion And Amortization	$3.600M	$2.160M	$2.800M
YoY Change	28.57%	53.19%	27.27%
Cash From Operating Activities	$22.37M	-$940.0K	$1.058M
YoY Change	2013.89%	-104.29%	-92.3%
INVESTING ACTIVITIES
Capital Expenditures	$6.320M	-$2.360M	$10.75M
YoY Change	-41.22%	-8.17%	258.16%
Acquisitions
YoY Change
Other Investing Activities	$10.22M	-$24.84M	-$84.29M
YoY Change	-112.12%	-27700.0%
Cash From Investing Activities	-$4.146M	-$27.19M	-$100.9M
YoY Change	-95.89%	996.37%	1375.28%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$54.64M	15.63M	$29.40M
YoY Change	85.84%	-83.38%	-73.76%
NET CHANGE
Cash From Operating Activities	$22.37M	-940.0K	$1.058M
Cash From Investing Activities	-$4.146M	-27.19M	-$100.9M
Cash From Financing Activities	$54.64M	15.63M	$29.40M
Net Change In Cash	$72.86M	-12.50M	-$70.46M
YoY Change	-203.4%	-111.01%	-159.23%
FREE CASH FLOW
Cash From Operating Activities	$22.37M	-$940.0K	$1.058M
Capital Expenditures	$6.320M	-$2.360M	$10.75M
Free Cash Flow	$16.05M	$1.420M	-$9.694M
YoY Change	-265.51%	-94.2%	-190.24%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001627475
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	upwk:AccruedExpensesAndOtherCurrentLiabilities
CY2019Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	upwk:AccruedExpensesAndOtherCurrentLiabilities
CY2020	upwk	Common Stock Warrant Exercisable Conversion Ratio CommonStockWarrantExercisableConversionRatio	0.1
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-38678
CY2020	dei	City Area Code CityAreaCode	650
CY2020	dei	Entity File Number EntityFileNumber	001-38678
CY2020	dei	Entity Registrant Name EntityRegistrantName	UPWORK INC.
CY2020	dei	Entity Registrant Name EntityRegistrantName	UPWORK INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	46-4337682
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	2625 Augustine Drive, Suite 601
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Santa Clara,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95054
CY2020	dei	City Area Code CityAreaCode	650
CY2020	dei	Local Phone Number LocalPhoneNumber	316-7500
CY2020	dei	Local Phone Number LocalPhoneNumber	316-7500
CY2020	dei	Security12b Title Security12bTitle	Common Stock, $0.0001 par value per share
CY2020	dei	Trading Symbol TradingSymbol	UPWK
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	1532720862	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	124962279	shares
CY2020Q4	us-gaap	Cash Cash	94081000	USD
CY2019Q4	us-gaap	Cash Cash	48392000	USD
CY2020Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	75570000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3335000	USD
CY2019Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	85481000	USD
CY2020Q4	us-gaap	Escrow Deposit EscrowDeposit	135042000	USD
CY2019Q4	us-gaap	Escrow Deposit EscrowDeposit	108721000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1661000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2215000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	47018000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	30156000	USD
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CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	28139000	USD
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CY2020Q4	us-gaap	Goodwill Goodwill	118219000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	118219000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	667000	USD
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CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21908000	USD
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CY2019Q4	us-gaap	Assets Assets	446380000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	6455000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	652000	USD
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CY2019Q4	upwk	Escrow Funds Payable EscrowFundsPayable	108721000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	7581000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	7584000	USD
CY2020Q4	upwk	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	32868000	USD
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CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	16801000	USD
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CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3142000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	10699000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	20506000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	21186000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	7522000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	5973000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	229917000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	186956000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
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CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	490000000	shares
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CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	124795222	shares
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CY2019Q4	us-gaap	Common Stock Value CommonStockValue	11000	USD
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CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-171957000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	299310000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	259424000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	529227000	USD
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CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	373628000	USD
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CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	253354000	USD
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CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	104267000	USD
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CY2019	us-gaap	Gross Profit GrossProfit	212418000	USD
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CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	83471000	USD
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CY2020	upwk	Provision For Transaction Losses ProvisionForTransactionLosses	3555000	USD
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CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-22408000	USD
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CY2020	us-gaap	Interest Expense InterestExpense	778000	USD
CY2019	us-gaap	Interest Expense InterestExpense	1306000	USD
CY2018	us-gaap	Interest Expense InterestExpense	2038000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	469000	USD
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CY2019	upwk	Common Stock Warrant Amortization CommonStockWarrantAmortization	975000	USD
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CY2020	us-gaap	Profit Loss ProfitLoss	-22867000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-16659000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-19907000	USD
CY2020	upwk	Provision For Transaction Losses Non Cash Portion ProvisionForTransactionLossesNonCashPortion	2919000	USD
CY2019	upwk	Provision For Transaction Losses Non Cash Portion ProvisionForTransactionLossesNonCashPortion	3118000	USD
CY2018	upwk	Provision For Transaction Losses Non Cash Portion ProvisionForTransactionLossesNonCashPortion	5110000	USD
CY2020	upwk	Depreciation And Amortization Excluding Amortization Of Financing Costs DepreciationAndAmortizationExcludingAmortizationOfFinancingCosts	10172000	USD
CY2019	upwk	Depreciation And Amortization Excluding Amortization Of Financing Costs DepreciationAndAmortizationExcludingAmortizationOfFinancingCosts	6661000	USD
CY2018	upwk	Depreciation And Amortization Excluding Amortization Of Financing Costs DepreciationAndAmortizationExcludingAmortizationOfFinancingCosts	4949000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	61000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	52000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	77000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	320000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	1158000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	0	USD
CY2020	upwk	Change In Fair Value Of Temporary Equity ChangeInFairValueOfTemporaryEquity	0	USD
CY2019	upwk	Change In Fair Value Of Temporary Equity ChangeInFairValueOfTemporaryEquity	0	USD
CY2018	upwk	Change In Fair Value Of Temporary Equity ChangeInFairValueOfTemporaryEquity	6056000	USD
CY2020	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	3860000	USD
CY2019	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	3945000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	750000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	711000	USD
CY2018	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	226000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	25508000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	18798000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	10361000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-44000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-14000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-91000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	20000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	10918000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-3506000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1198000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2069000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1292000	USD
CY2020	upwk	Increase Decrease Operating Lease Liability IncreaseDecreaseOperatingLeaseLiability	-1851000	USD
CY2019	upwk	Increase Decrease Operating Lease Liability IncreaseDecreaseOperatingLeaseLiability	-1453000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5822000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1457000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1609000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	15438000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-2957000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	2849000	USD
CY2020	us-gaap	Increase Decrease In Commodity Contract Assets And Liabilities IncreaseDecreaseInCommodityContractAssetsAndLiabilities	-4027000	USD
CY2019	us-gaap	Increase Decrease In Commodity Contract Assets And Liabilities IncreaseDecreaseInCommodityContractAssetsAndLiabilities	-4430000	USD
CY2018	us-gaap	Increase Decrease In Commodity Contract Assets And Liabilities IncreaseDecreaseInCommodityContractAssetsAndLiabilities	-109000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	22365000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1058000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13744000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	107281000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	168786000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	117500000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	84500000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6320000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10752000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3002000	USD
CY2020	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	8045000	USD
CY2019	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	5886000	USD
CY2018	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	3839000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4146000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-100924000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-6841000	USD
CY2020	upwk	Changes In Escrow Funds Payable ChangesInEscrowFundsPayable	26321000	USD
CY2019	upwk	Changes In Escrow Funds Payable ChangesInEscrowFundsPayable	10535000	USD
CY2018	upwk	Changes In Escrow Funds Payable ChangesInEscrowFundsPayable	10991000	USD
CY2020	upwk	Proceeds From Exercises Of Stock Options And Common Stock Warrant ProceedsFromExercisesOfStockOptionsAndCommonStockWarrant	31028000	USD
CY2019	upwk	Proceeds From Exercises Of Stock Options And Common Stock Warrant ProceedsFromExercisesOfStockOptionsAndCommonStockWarrant	18155000	USD
CY2018	upwk	Proceeds From Exercises Of Stock Options And Common Stock Warrant ProceedsFromExercisesOfStockOptionsAndCommonStockWarrant	8160000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	247000	USD
CY2020	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	18000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	50000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	15000000	USD
CY2020	us-gaap	Repayments Of Debt RepaymentsOfDebt	25621000	USD
CY2019	us-gaap	Repayments Of Debt RepaymentsOfDebt	55679000	USD
CY2018	us-gaap	Repayments Of Debt RepaymentsOfDebt	25000000	USD
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	4913000	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	6391000	USD
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	USD
CY2020	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2019	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2018	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	109381000	USD
CY2020	upwk	Payments Of Deferred Offering Costs PaymentsOfDeferredOfferingCosts	0	USD
CY2019	upwk	Payments Of Deferred Offering Costs PaymentsOfDeferredOfferingCosts	0	USD
CY2018	upwk	Payments Of Deferred Offering Costs PaymentsOfDeferredOfferingCosts	6220000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	54641000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	29402000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	112065000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	72860000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-70464000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	118968000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	159603000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	230067000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	111099000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	232463000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	159603000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	230067000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	764000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1291000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	1976000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	37000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	161000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2815000	USD
CY2020	upwk	Internal Use Software And Platform Development Costs Incurred But Not Paid InternalUseSoftwareAndPlatformDevelopmentCostsIncurredButNotPaid	286000	USD
CY2019	upwk	Internal Use Software And Platform Development Costs Incurred But Not Paid InternalUseSoftwareAndPlatformDevelopmentCostsIncurredButNotPaid	684000	USD
CY2018	upwk	Internal Use Software And Platform Development Costs Incurred But Not Paid InternalUseSoftwareAndPlatformDevelopmentCostsIncurredButNotPaid	130000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	7160000	USD
CY2020	us-gaap	Temporary Equity Elimination As Partof Reorganization TemporaryEquityEliminationAsPartofReorganization	0	USD
CY2019	us-gaap	Temporary Equity Elimination As Partof Reorganization TemporaryEquityEliminationAsPartofReorganization	0	USD
CY2018	us-gaap	Temporary Equity Elimination As Partof Reorganization TemporaryEquityEliminationAsPartofReorganization	166486000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	3300000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	2500000	USD
CY2015	upwk	Number Of Operating Platforms Consolidated NumberOfOperatingPlatformsConsolidated	2	platform
CY2018Q4	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	109400000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt;text-align:justify"><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:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the periods presented. Such estimates include, but are not limited to: the useful lives of assets; assessment of the recoverability of long-lived assets; goodwill impairment; standalone selling price of material rights and the period of time over which to defer and recognize the consideration allocated to the material rights; allowance for doubtful accounts; liabilities relating to transaction losses; the valuation of warrants; stock-based compensation; and accounting for income taxes. Management bases its estimates on historical experience and on various other assumptions that management believes to be reasonable under the circumstances. The Company evaluates its estimates, assumptions, and judgments on an ongoing basis using historical experience and other factors and revises them when facts and circumstances dictate.</span></div><div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Due to the COVID-19 pandemic, there has been uncertainty and disruption in the global economy. The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities. These estimates may change as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions.</span></div>
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	2300000	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	1700000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	1000000.0	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	800000	USD
CY2020Q4	upwk	Escrow Funds Payable EscrowFundsPayable	135000000.0	USD
CY2019Q4	upwk	Escrow Funds Payable EscrowFundsPayable	108700000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	94081000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	48392000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	129128000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	3340000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	2490000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	2753000	USD
CY2020Q4	upwk	Funds Held In Escrow Including Funds In Transit FundsHeldInEscrowIncludingFundsInTransit	135042000	USD
CY2019Q4	upwk	Funds Held In Escrow Including Funds In Transit FundsHeldInEscrowIncludingFundsInTransit	108721000	USD
CY2018Q4	upwk	Funds Held In Escrow Including Funds In Transit FundsHeldInEscrowIncludingFundsInTransit	98186000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	232463000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	159603000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	230067000	USD
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentration of Risk</span></div><div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that subject the Company to concentration of risk consist primarily of cash, restricted cash, funds held in escrow, including funds in transit, and trade and client receivables. The Company maintains its cash balances with large, high-credit quality financial institutions and other payment companies. At times, such deposits may be in excess of federally insured limits. The Company has not experienced any losses on its deposits. Credit risk on trade receivables is limited as a result of the large size of the Company’s client base as well as a large portion of payments made using pre-authorized credit cards. The Company performs ongoing credit evaluations of its clients and maintains allowances for potential credit losses. For any receivables that are deemed not collectible, losses are recorded when probable and estimable. These losses, when incurred, have been within the range of the Company’s expectations.</span></div><div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Three clients each accounted for more than 10% of trade and client receivables as of December 31, 2020. Two clients each accounted for more than 10% of trade and client receivables as of December 31, 2019. For the year ended December 31, 2020, the Company did not have any clients that accounted for more than 10% of total revenue. For the years ended December 31, 2019 and 2018, the Company generated $32.0 million and $29.5 million, respectively, in revenue from one of these clients, which accounted for more than 10% of revenue during the years ended December 31, 2019 and 2018.</span></div><div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company is dependent upon third parties, such as Amazon Web Services, in order to meet the uptime and performance needs of its users.</span></div>
CY2020Q4	upwk	Number Of Clients NumberOfClients	3	segment
CY2019Q4	upwk	Number Of Clients NumberOfClients	2	segment
CY2020Q4	upwk	Accounts Receivable Trade Gross Current AccountsReceivableTradeGrossCurrent	15900000	USD
CY2019Q4	upwk	Accounts Receivable Trade Gross Current AccountsReceivableTradeGrossCurrent	10300000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	32800000	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	22100000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2215000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2832000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1577000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3143000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3193000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4940000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	3697000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	3810000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	3685000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1661000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2215000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2832000	USD
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Deferred Offering Costs DeferredOfferingCosts	6300000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	51400000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	37400000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	23600000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-600000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	900000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-400000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	21000000.0	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	16800000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	30156000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	16801000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	13799000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	4177000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	3153000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	13000000.0	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	10100000	USD
CY2020Q4	us-gaap	Financial Liabilities Fair Value Disclosure FinancialLiabilitiesFairValueDisclosure	147292000	USD
CY2019Q4	us-gaap	Financial Liabilities Fair Value Disclosure FinancialLiabilitiesFairValueDisclosure	120767000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10800000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	18300000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	43513000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	29369000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	15374000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7915000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	28139000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21454000	USD
CY2020	us-gaap	Depreciation Depreciation	3600000	USD
CY2019	us-gaap	Depreciation Depreciation	2800000	USD
CY2018	us-gaap	Depreciation Depreciation	2200000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	8000000.0	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	6400000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	4000000.0	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	3900000	USD
CY2020	us-gaap	Cost Of Revenue CostOfRevenue	2900000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	1200000	USD
CY2019	us-gaap	Cost Of Revenue CostOfRevenue	900000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	100000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	31856000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	31189000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	667000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	31856000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	28521000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3335000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2700000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2700000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2700000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	667000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	667000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	14007000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	5344000	USD
CY2020Q4	upwk	Accrued Freelancer Costs Current AccruedFreelancerCostsCurrent	1235000	USD
CY2019Q4	upwk	Accrued Freelancer Costs Current AccruedFreelancerCostsCurrent	622000	USD
CY2020Q4	upwk	Accrued Indirect Taxes Current AccruedIndirectTaxesCurrent	3818000	USD
CY2019Q4	upwk	Accrued Indirect Taxes Current AccruedIndirectTaxesCurrent	2401000	USD
CY2020Q4	upwk	Accrued Vendor Expenses Current AccruedVendorExpensesCurrent	8662000	USD
CY2019Q4	upwk	Accrued Vendor Expenses Current AccruedVendorExpensesCurrent	5485000	USD
CY2020Q4	upwk	Accrued Payment Processing Fees Current AccruedPaymentProcessingFeesCurrent	1219000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24231000	USD
CY2019Q4	upwk	Accrued Payment Processing Fees Current AccruedPaymentProcessingFeesCurrent	832000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3725000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3214000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	202000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	444000	USD
CY2020Q4	upwk	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	32868000	USD
CY2019Q4	upwk	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	18342000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	19729000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21908000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3725000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3214000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	20506000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	21186000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2356000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	28965000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5391000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6519000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24400000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	6000000.0	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	5900000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	300000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	400000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	700000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	600000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	3300000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	3300000	USD
CY2020	us-gaap	Longterm Purchase Commitment Period LongtermPurchaseCommitmentPeriod	P5Y
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3919000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5843000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	4937000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4734000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24231000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y4M24D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0580
CY2019Q4	upwk	Letters Of Credit Held LettersOfCreditHeld	3	letter
CY2020Q4	upwk	Letters Of Credit Held LettersOfCreditHeld	3	letter
CY2020Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1000000.0	USD
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	800000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10750000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	18321000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	27000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	38000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	10723000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	18283000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	7581000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	7584000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3142000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	10699000	USD
CY2020Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0564
CY2019Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0693
CY2017Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	49000000.0	USD
CY2017Q3	upwk	Adjusted Liquidity Ratio AdjustedLiquidityRatio	0.0175
CY2019Q1	upwk	Adjusted Liquidity Ratio AdjustedLiquidityRatio	1.75
CY2019Q1	upwk	Adjusted Liquidity Ratio AdjustedLiquidityRatio	1.30
CY2019Q1	upwk	Debt Covenant Reduction In Frequency Of Providing Financial Information Adjusted Quick Ratio To Maintain DebtCovenantReductionInFrequencyOfProvidingFinancialInformationAdjustedQuickRatioToMaintain	2.50
CY2019Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	25000000.0	USD
CY2019Q2	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	25000000.0	USD
CY2018Q3	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	15000000.0	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	7571000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	3179000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10750000	USD
CY2018Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	61279079	shares
CY2019Q2	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	1200000	USD
CY2019Q2	upwk	Class Of Warrant Or Right Number Of Warrants Surrendered ClassOfWarrantOrRightNumberOfWarrantsSurrendered	64646	shares
CY2019Q2	upwk	Stock Issued During Period Shares Warrant Exercises StockIssuedDuringPeriodSharesWarrantExercises	333685	shares
CY2018	upwk	Reclassification Of Redeemable Convertible Preferred Stock Warrant Liability To Redeemable Convertible Preferred Stock ReclassificationOfRedeemableConvertiblePreferredStockWarrantLiabilityToRedeemableConvertiblePreferredStock	6100000	USD
CY2019	upwk	Stock Issued During Period Shares Warrant Exercises StockIssuedDuringPeriodSharesWarrantExercises	49963	shares
CY2019	upwk	Class Of Warrant Or Right Number Of Warrants Surrendered ClassOfWarrantOrRightNumberOfWarrantsSurrendered	37	shares
CY2020	upwk	Class Of Warrant Or Right Number Of Warrants Surrendered ClassOfWarrantOrRightNumberOfWarrantsSurrendered	29	shares
CY2020	upwk	Stock Issued During Period Shares Warrant Exercises StockIssuedDuringPeriodSharesWarrantExercises	49971	shares
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	800000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	700000	USD
CY2018	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	200000	USD
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2020Q4	upwk	Common Stock Voting Rights1 CommonStockVotingRights1	1	vote
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	490000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	490000000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	106967000	USD
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	9065976	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	3.42
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	1216013	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	4.08
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4858590	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.83
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y9M18D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	149046000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	3876252	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	3.74
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P5Y6M18D
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	31578734	shares
CY2019Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	36180533	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	15140579	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.61
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y2M8D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	119303000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	4858590	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	3.83
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P5Y9M18D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	149046000	USD
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	124100000	USD
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	73000000.0	USD
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	18000000.0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.65
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.19
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.15
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.38
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11367395	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	19745024	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	24961070	shares
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-19925000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	31000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	25508000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18798000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10361000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-22867000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-16659000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-19907000	USD
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	118698567	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	109814604	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	52327518	shares
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-22748000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-16658000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	27000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	33000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-22717000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-16631000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-19892000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	127000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	26000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	11000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	150000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	28000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	150000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.0066
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.0017
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.0007
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.0049
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.0027
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0188
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.9402
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.5145
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.0584
CY2020	upwk	Effective Income Tax Rate Reconciliation Nondeductible Expense Warrants Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseWarrantsPercent	0
CY2019	upwk	Effective Income Tax Rate Reconciliation Nondeductible Expense Warrants Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseWarrantsPercent	0
CY2018	upwk	Effective Income Tax Rate Reconciliation Nondeductible Expense Warrants Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseWarrantsPercent	-0.0698
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.0059
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.0434
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.0146
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Research And Development EffectiveIncomeTaxRateReconciliationNondeductibleExpenseResearchAndDevelopment	0.0974
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Research And Development EffectiveIncomeTaxRateReconciliationNondeductibleExpenseResearchAndDevelopment	0.1374
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Research And Development EffectiveIncomeTaxRateReconciliationNondeductibleExpenseResearchAndDevelopment	0.1054
CY2020	upwk	Effective Income Tax Rate Reconciliation Expiration Of Operating Income Loss EffectiveIncomeTaxRateReconciliationExpirationOfOperatingIncomeLoss	-0.1400
CY2019	upwk	Effective Income Tax Rate Reconciliation Expiration Of Operating Income Loss EffectiveIncomeTaxRateReconciliationExpirationOfOperatingIncomeLoss	-0.1833
CY2018	upwk	Effective Income Tax Rate Reconciliation Expiration Of Operating Income Loss EffectiveIncomeTaxRateReconciliationExpirationOfOperatingIncomeLoss	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1.1034
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.6342
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.1921
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.0066
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.0017
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.0007
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	77230000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	48988000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	230000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4192000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	5555000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	10248000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	4903000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	2596000	USD
CY2020Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	11352000	USD
CY2019Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	8762000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	9202000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	99270000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	74786000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	92390000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	63542000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	6880000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	11244000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	89000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	693000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	4523000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2268000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1349000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6880000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	11244000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	63542000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	92390000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	49439000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	63542000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	45364000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	49439000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	92400000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	63500000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	15100000	USD
CY2020Q4	upwk	Tax Credit Carryforward Subject To Expiration TaxCreditCarryforwardSubjectToExpiration	200000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13300000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12782000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10973000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10200000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	131000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	108000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	164000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	608000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1973000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	667000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	253354000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	183000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13338000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12782000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10973000	USD
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	373628000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	300562000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	373628000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	300562000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	253354000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.50
CY2020	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Amount DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount	5000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2500000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2000000.0	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1700000	USD

Files In Submission

Name	View Source	Status
0001627475-21-000015-index-headers.html	Edgar Link	pending
0001627475-21-000015-index.html	Edgar Link	pending
0001627475-21-000015.txt	Edgar Link	pending
0001627475-21-000015-xbrl.zip	Edgar Link	pending
exhibit1021offerletterfora.htm	Edgar Link	pending
exhibit231pwcconsent2020.htm	Edgar Link	pending
exhibit3112020.htm	Edgar Link	pending
exhibit3122020.htm	Edgar Link	pending
exhibit3212020.htm	Edgar Link	pending
exhibit3222020.htm	Edgar Link	pending
exhibit44descriptionofcapi.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
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R78.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
upwk-20201231.htm	Edgar Link	pending
upwk-20201231.xsd	Edgar Link	pending
upwk-20201231_cal.xml	Edgar Link	unprocessable
upwk-20201231_def.xml	Edgar Link	unprocessable
upwk-20201231_g1.jpg	Edgar Link	pending
upwk-20201231_htm.xml	Edgar Link	completed
upwk-20201231_lab.xml	Edgar Link	unprocessable
upwk-20201231_pre.xml	Edgar Link	unprocessable

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$UPWK
UPWORK, INC Stock $upwk

2020 Form 10-K Financial Statement

#000162747521000015 Filed on February 24, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UPWK UPWORK, INC Stock $upwk

2020 Form 10-K Financial Statement

#000162747521000015 Filed on February 24, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UPWK
UPWORK, INC Stock $upwk