$EXAS
EXACT SCIENCES CORP Stock $exas

$exas Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000112414020000010 Filed on February 21, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$295.6M	$143.0M	$118.3M
YoY Change	106.72%	63.59%	62.94%
Cost Of Revenue	$70.42M	$37.83M	$29.69M
YoY Change	86.15%	60.97%	43.41%
Gross Profit	$213.2M	$105.2M	$88.27M
YoY Change	102.73%	64.56%	70.41%
Gross Profit Margin	72.12%	73.54%	74.62%
Selling, General & Admin	$264.3M	$133.0M	$111.5M
YoY Change	98.64%	79.29%	62.82%
% of Gross Profit	123.96%	126.52%	126.35%
Research & Development	$43.22M	$20.70M	$17.40M
YoY Change	108.81%	62.99%	48.72%
% of Gross Profit	20.28%	19.69%	19.71%
Depreciation & Amortization	$26.00M	$6.900M	$6.100M
YoY Change	276.81%	53.33%	52.5%
% of Gross Profit	12.2%	6.56%	6.91%
Operating Expenses	$309.3M	$153.7M	$129.2M
YoY Change	101.16%	76.91%	60.89%
Operating Profit	-$96.11M	-$49.32M	-$40.93M
YoY Change	94.88%	114.42%	43.6%
Interest Expense	-$10.60M	-$4.700M	$10.70M
YoY Change	125.53%	-461.54%	723.38%
% of Operating Profit
Other Income/Expense, Net	-$10.58M		-$4.412M
YoY Change
Pretax Income	-$106.7M	-$53.97M	-$45.34M
YoY Change	97.68%	148.7%	67.3%
Income Tax	-$184.6M	$7.000K	$27.00K
% Of Pretax Income
Net Earnings	$77.97M	-$53.97M	-$45.36M
YoY Change	-244.46%	147.59%	68.64%
Net Earnings / Revenue	26.38%	-37.75%	-38.35%
Basic Earnings Per Share	$0.56
Diluted Earnings Per Share	$0.54	-$439.0K	-$370.0K
COMMON SHARES
Basic Shares Outstanding	139.9M shares
Diluted Shares Outstanding	143.2M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$323.7M	$1.124B	$1.185B
YoY Change	-71.21%	164.7%	156.26%
Cash & Equivalents	$177.3M	$160.4M	$161.7M
Short-Term Investments	$146.4M	$963.8M	$1.024B
Other Short-Term Assets	$38.20M	$20.50M	$23.80M
YoY Change	86.34%	102.97%	176.74%
Inventory	$61.72M	$39.15M	$38.60M
Prepaid Expenses
Receivables	$130.4M	$45.33M	$41.90M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$553.9M	$1.228B	$1.290B
YoY Change	-54.89%	152.07%	151.04%
LONG-TERM ASSETS
Property, Plant & Equipment	$455.3M	$245.3M	$188.5M
YoY Change	85.65%	206.57%	238.42%
Goodwill	$1.203B	$17.28M
YoY Change	6863.35%	773.12%
Intangibles	$1.144B	$29.00M
YoY Change	3843.0%
Long-Term Investments
YoY Change
Other Assets	$23.32M	$4.415M	$9.000M
YoY Change	428.11%	-52.01%	-49.44%
Total Long-Term Assets	$2.952B	$296.0M	$220.0M
YoY Change	897.39%	165.67%	199.32%
TOTAL ASSETS
Total Short-Term Assets	$553.9M	$1.228B	$1.290B
Total Long-Term Assets	$2.952B	$296.0M	$220.0M
Total Assets	$3.506B	$1.524B	$1.510B
YoY Change	130.03%	154.6%	157.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$25.97M	$28.14M	$32.70M
YoY Change	-7.7%	74.79%	271.59%
Accrued Expenses	$193.3M	$100.6M	$70.80M
YoY Change	92.09%	104.98%	84.38%
Deferred Revenue	$600.0K	$500.0K
YoY Change	20.0%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$834.0K	$8.000K	$0.00
YoY Change	10325.0%	-96.0%	-100.0%
Total Short-Term Liabilities	$236.5M	$136.2M	$106.7M
YoY Change	73.68%	99.95%	114.69%
LONG-TERM LIABILITIES
Long-Term Debt	$24.03M	$24.49M	$673.4M
YoY Change	-1.89%	469.63%	14864.44%
Other Long-Term Liabilities	$34.91M	$17.67M	$12.70M
YoY Change	97.58%	209.98%	118.97%
Total Long-Term Liabilities	$58.94M	$42.16M	$686.1M
YoY Change	39.8%	321.63%	6561.17%
TOTAL LIABILITIES
Total Short-Term Liabilities	$236.5M	$136.2M	$106.7M
Total Long-Term Liabilities	$58.94M	$42.16M	$686.1M
Total Liabilities	$1.218B	$843.1M	$792.8M
YoY Change	44.44%	979.49%	1221.33%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.120B	-$1.036B
YoY Change	8.11%
Common Stock	$3.408B	$1.718B
YoY Change	98.35%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.958B	$447.3M	$716.7M
YoY Change
Total Liabilities & Shareholders Equity	$3.506B	$1.524B	$1.510B
YoY Change	130.03%	154.6%	157.08%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$77.97M	-$53.97M	-$45.36M
YoY Change	-244.46%	147.59%	68.64%
Depreciation, Depletion And Amortization	$26.00M	$6.900M	$6.100M
YoY Change	276.81%	53.33%	52.5%
Cash From Operating Activities	-$25.40M	-$800.0K	-$4.100M
YoY Change	3075.0%	14.29%	-25.45%
INVESTING ACTIVITIES
Capital Expenditures	-$41.20M	-$52.60M	-$53.60M
YoY Change	-21.67%	44.9%	239.24%
Acquisitions
YoY Change
Other Investing Activities	-$797.0M	$42.80M	-$25.40M
YoY Change	-1962.15%	-29.84%	-77.08%
Cash From Investing Activities	-$838.1M	-$9.800M	-$79.00M
YoY Change	8452.04%	-139.68%	-37.6%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	6.600M	9.300M	19.10M
YoY Change	-29.03%	232.14%	695.83%
NET CHANGE
Cash From Operating Activities	-25.40M	-800.0K	-4.100M
Cash From Investing Activities	-838.1M	-9.800M	-79.00M
Cash From Financing Activities	6.600M	9.300M	19.10M
Net Change In Cash	-856.9M	-1.300M	-64.00M
YoY Change	65815.38%	-104.85%	-50.66%
FREE CASH FLOW
Cash From Operating Activities	-$25.40M	-$800.0K	-$4.100M
Capital Expenditures	-$41.20M	-$52.60M	-$53.60M
Free Cash Flow	$15.80M	$51.80M	$49.50M
YoY Change	-69.5%	45.51%	380.58%

Facts In Submission

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CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-82671000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-175821000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-114729000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	335295000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	253388000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	4303000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-332000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	520418000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	260246000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	6636000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5103000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	3008000	USD
CY2017	exas	Compensation Expense Related To Issuance Of Stock Options And Restricted Stock Awards Values CompensationExpenseRelatedToIssuanceOfStockOptionsAndRestrictedStockAwardsValues	35512000	USD
CY2017	exas	Purchase Of Employee Stock Purchase Plan Values PurchaseOfEmployeeStockPurchasePlanValues	2841000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-114397000	USD
CY2018	exas	Compensation Expense Related To Issuance Of Stock Options And Restricted Stock Awards Values CompensationExpenseRelatedToIssuanceOfStockOptionsAndRestrictedStockAwardsValues	60264000	USD
CY2018	exas	Purchase Of Employee Stock Purchase Plan Values PurchaseOfEmployeeStockPurchasePlanValues	4895000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-175149000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-672000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	680941000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	-300768000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities Net Of Adjustments StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments	182477000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	268368000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	8787000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	7409000	USD
CY2019	exas	Compensation Expense Related To Issuance Of Stock Options And Restricted Stock Awards Values CompensationExpenseRelatedToIssuanceOfStockOptionsAndRestrictedStockAwardsValues	108483000	USD
CY2019	exas	Purchase Of Employee Stock Purchase Plan Values PurchaseOfEmployeeStockPurchasePlanValues	8396000	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	1407080000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	441000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-83993000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1322000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2288061000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-83993000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-175149000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-114397000	USD
CY2019	exas	Depreciation And Amortization Of Fixed Assets DepreciationAndAmortizationOfFixedAssets	34212000	USD
CY2018	exas	Depreciation And Amortization Of Fixed Assets DepreciationAndAmortizationOfFixedAssets	20544000	USD
CY2017	exas	Depreciation And Amortization Of Fixed Assets DepreciationAndAmortizationOfFixedAssets	14572000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-765000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1394000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-353000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-954000	USD
CY2019	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	3355000	USD
CY2018	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	385000	USD
CY2017	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	23000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-207000	USD
CY2018	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	0	USD
CY2017	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	0	USD
CY2019	exas	Deferred Income Tax Expense Benefit Related To Acquisitions DeferredIncomeTaxExpenseBenefitRelatedToAcquisitions	-185109000	USD
CY2018	exas	Deferred Income Tax Expense Benefit Related To Acquisitions DeferredIncomeTaxExpenseBenefitRelatedToAcquisitions	0	USD
CY2017	exas	Deferred Income Tax Expense Benefit Related To Acquisitions DeferredIncomeTaxExpenseBenefitRelatedToAcquisitions	-115000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	108483000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	60264000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	35512000	USD
CY2019	exas	Loss On Settlement Of Convertible Notes LossOnSettlementOfConvertibleNotes	10558000	USD
CY2018	exas	Loss On Settlement Of Convertible Notes LossOnSettlementOfConvertibleNotes	0	USD
CY2017	exas	Loss On Settlement Of Convertible Notes LossOnSettlementOfConvertibleNotes	0	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	42256000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	28564000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	0	USD
CY2019	exas	Amortization Of Liabilities AmortizationOfLiabilities	4467000	USD
CY2018	exas	Amortization Of Liabilities AmortizationOfLiabilities	2394000	USD
CY2017	exas	Amortization Of Liabilities AmortizationOfLiabilities	1620000	USD
CY2019	exas	Increase Decrease In Amortization Of Premium On Short Term Investments IncreaseDecreaseInAmortizationOfPremiumOnShortTermInvestments	-3102000	USD
CY2018	exas	Increase Decrease In Amortization Of Premium On Short Term Investments IncreaseDecreaseInAmortizationOfPremiumOnShortTermInvestments	-3516000	USD
CY2017	exas	Increase Decrease In Amortization Of Premium On Short Term Investments IncreaseDecreaseInAmortizationOfPremiumOnShortTermInvestments	88000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	16035000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2540000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	983000	USD
CY2018	exas	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	0	USD
CY2017	exas	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	0	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3469000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	5427000	USD
CY2018	us-gaap	Operating Lease Expense OperatingLeaseExpense	0	USD
CY2017	us-gaap	Operating Lease Expense OperatingLeaseExpense	0	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	27938000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	17292000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	17529000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	19041000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	12729000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	19194000	USD
CY2019	exas	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-4114000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	33076000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	30537000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	5932000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	3966000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1492000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-115010000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-69325000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-71724000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	634117000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1192506000	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	357051000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	1660559000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	579171000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	271466000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	171802000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	150093000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	48480000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	973861000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	17908000	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	729477000	USD
CY2018	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	896430000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2980000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2017	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	20690000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1852000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	578000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3070000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-121073000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-781914000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-160805000	USD
CY2017	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2019	exas	Sale Leaseback Transaction Net Proceeds Payments Financing Activities SaleLeasebackTransactionNetProceedsPaymentsFinancingActivities	0	USD
CY2018	exas	Sale Leaseback Transaction Net Proceeds Payments Financing Activities SaleLeasebackTransactionNetProceedsPaymentsFinancingActivities	2084000	USD
CY2017	exas	Sale Leaseback Transaction Net Proceeds Payments Financing Activities SaleLeasebackTransactionNetProceedsPaymentsFinancingActivities	-174000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	8787000	USD
CY2017	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	319000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	6636000	USD
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	5103000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	253388000	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	8396000	USD
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	4895000	USD
CY2017	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	2841000	USD
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	493356000	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	24236000	USD
CY2017	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	-202000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	442000	USD
CY2018	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	139000	USD
CY2017	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	253181000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	934142000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	260956000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	0	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	36000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	143000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	17098000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	82939000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	28570000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	160430000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	77491000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	48921000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	177528000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	160430000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	77491000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	10265000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	33452000	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	8818000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	0	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	2092000	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	1322000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-708000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-475000	USD
CY2019	exas	Issuance Of Stock To Fund Matching Contributions IssuanceOfStockToFundMatchingContributions	7409000	USD
CY2018	exas	Issuance Of Stock To Fund Matching Contributions IssuanceOfStockToFundMatchingContributions	4303000	USD
CY2017	exas	Issuance Of Stock To Fund Matching Contributions IssuanceOfStockToFundMatchingContributions	3008000	USD
CY2019	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	182477000	USD
CY2018	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2017	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2019	exas	Debt Instrument Convertible Equity Component Consideration Settled DebtInstrumentConvertibleEquityComponentConsiderationSettled	-300768000	USD
CY2018	exas	Debt Instrument Convertible Equity Component Consideration Settled DebtInstrumentConvertibleEquityComponentConsiderationSettled	0	USD
CY2017	exas	Debt Instrument Convertible Equity Component Consideration Settled DebtInstrumentConvertibleEquityComponentConsiderationSettled	0	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	1407080000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
CY2017	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
CY2019	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2018	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	3060000	USD
CY2017	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	9301000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	4638000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	201000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top: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:700;line-height:120%;">Use of Estimates</span></div><div style="text-indent:27pt;margin-top: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 the consolidated financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2019	us-gaap	Equity Securities Fv Ni Realized Gain EquitySecuritiesFvNiRealizedGain	3400000	USD
CY2018	us-gaap	Equity Securities Fv Ni Realized Gain EquitySecuritiesFvNiRealizedGain	400000	USD
CY2017	us-gaap	Equity Securities Fv Ni Realized Gain EquitySecuritiesFvNiRealizedGain	23000	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	177528000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	160430000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	1716000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	0	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	146401000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1048807000	USD
CY2018Q4	us-gaap	Marketable Securities MarketableSecurities	963752000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	323929000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	1124182000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	175082000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	12000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	87000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	175007000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1050204000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	109000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1506000	USD
CY2017	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-387000	USD
CY2017	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-55000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-332000	USD
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-989000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-317000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-672000	USD
CY2019	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	681000	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-641000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1322000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
CY2019Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	24958000	USD
CY2018Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	12761000	USD
CY2019Q4	exas	Inventory Finished Semi Finished Goods InventoryFinishedSemiFinishedGoods	36766000	USD
CY2018Q4	exas	Inventory Finished Semi Finished Goods InventoryFinishedSemiFinishedGoods	26387000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	61724000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	39148000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	532956000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	303121000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	77631000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	57862000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	455325000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	245259000	USD
CY2019	us-gaap	Depreciation Depreciation	33900000	USD
CY2018	us-gaap	Depreciation Depreciation	20500000	USD
CY2017	us-gaap	Depreciation Depreciation	14500000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	963690000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	33058000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	20411000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4107000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	943279000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	28951000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1143550000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	29002000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	943279000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	93610000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	93508000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	93302000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	93159000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	92825000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	476875000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	943279000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	17279000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017Q4	us-gaap	Goodwill Goodwill	1979000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	1203197000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	19280000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	20822000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	9509000	shares
CY2018	us-gaap	Advertising Expense AdvertisingExpense	93700000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	58000000.0	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	144685000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	876293000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	454462000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	265989000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	88700000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	87000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	144685000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	87000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	853233000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1357000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	54108000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	148000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	907341000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1505000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	175082000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	175006000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	0	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	USD
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top: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:700;line-height:120%;">Concentration of Credit Risk</span></div><div style="text-indent:27pt;margin-top: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 subject the Company to credit risk consist of cash, cash equivalents and marketable securities. As of December 31, 2019, the Company had cash and cash equivalents deposited in financial institutions in which the balances exceed the federal government agency insured limit of $250,000 by approximately $145.6 million. The Company has not experienced any losses in such accounts and management believes it is not exposed to any significant credit risk.</span></div><div style="text-indent:27pt;margin-top: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%;">Through December 31, 2019, the Company’s revenues have been primarily derived from the sale of Cologuard and Oncotype DX tests. The following is a breakdown of revenue and accounts receivable from major payers:</span></div><div style="margin-top:6pt;margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:28.973%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:0.537%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:8.766%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:0.537%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:8.766%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:0.537%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:8.766%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:0.537%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:8.766%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:0.537%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:8.766%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:0.537%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:8.775%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="15" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">% Revenue for the years ended December 31,</span></td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="15" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">% Accounts Receivable at December 31,</span></td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Major Payer</span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">2019</span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">2018</span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">2017</span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">2019</span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">2018</span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"><span style="font-size:8pt;font-weight:700;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">2017</span></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">Centers for Medicare and Medicaid Services</span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">29% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">36% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">44% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">19% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">32% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">39% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">UnitedHealthcare</span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">13% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">13% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">11% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">7% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">10% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:0%;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);">10% </span></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"><span style="font-size:10pt;font-weight:400;font-family:'Times New Roman',sans-serif;color:#000000;background-color:rgb(255,255,255, 0.0);"> </span></td></tr></table></div>
CY2019Q4	us-gaap	Cash Fdic Insured Amount CashFDICInsuredAmount	250000	USD
CY2019Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	145600000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	120700000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	209900000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-89200000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-4400000	USD
CY2019	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<div style="margin-top: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:700;line-height:120%;">Guarantees and Indemnifications</span></div><div style="text-indent:27pt;margin-top: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 Company, as permitted under Delaware law and in accordance with its bylaws, indemnifies its officers and directors for certain events or occurrences, subject to certain limits, while the officer or director is or was serving at the Company’s request in such capacity. The term of the indemnification period is for the officer’s or director’s lifetime. The maximum amount of potential future indemnification is unlimited; however, the Company has a directors and officers insurance policy that limits its exposure and may enable it to recover a portion of any future amounts paid. The Company believes the fair value of these indemnification agreements is minimal. Accordingly, the Company has not recorded any liabilities for these agreements as of December 31, 2019 and 2018.</span></div>
CY2019	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top: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:700;line-height:120%;">Reclassifications</span></div><div style="text-indent:27pt;margin-top: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%;">Certain prior year amounts have been reclassified to conform to the current year presentation in the consolidated financial statements and accompanying notes to the consolidated financial statements including the amortization of acquired intangible assets, which is now presented as a separate line item on the Company's consolidated statements of operations and was previously included in cost of sales, research and development, and general and administrative expenses. Due to these reclassifications, the Company is no longer presenting gross margin on the Company's consolidated statements of operations.</span></div>
CY2017Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	7500000	shares
CY2016Q2	us-gaap	Share Price SharePrice	35.00
CY2017Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	253400000	USD
CY2017Q2	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	7300000	USD
CY2019Q4	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	17000000.0	shares
CY2019Q4	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	400000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	108500000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	60300000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	35500000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	108483000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	60264000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	35512000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	3900000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	21600000	USD
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3505481	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.00
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y6M
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	953097	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	21.97
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1067120	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	4.78
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	30997	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	13.90
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3360461	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	11.89
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y4M24D
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	343566	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	44.37
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1033012	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	6.42
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	139454	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	24.07
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2531561	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.86
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y7M6D
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	186044	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	92.61
CY2019	exas	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInPeriod	650405	shares
CY2019	exas	Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAssumedInPeriodWeightedAverageExercisePrice	60.02	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	641925	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	13.69
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	25792	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	33.25
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2700293	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	34.01
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y8M12D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	158466000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1411179	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	24.17
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y8M12D
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	96608000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	52000000.0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	53000000.0	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	47000000.0	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	214400000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y5M4D
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	8800000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6600000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5100000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	9439937	shares
CY2019Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P10Y
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	9200000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	219000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	896000	USD
CY2019	us-gaap	Lease Cost LeaseCost	10315000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0680
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y9M18D
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	9641000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	51030000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	126400000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	126600000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7900000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	118700000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15967000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	17048000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	17068000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	18701000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	18913000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	91852000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	179549000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	52993000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	126556000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	3861000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5135000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4995000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	5027000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	5146000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	44286000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	68450000	USD
CY2018	exas	Contribution To Construction Project By Owner ContributionToConstructionProjectByOwner	3900000	USD
CY2019Q4	exas	Lessee Operating Lease Lease Not Yet Commenced Amount LesseeOperatingLeaseLeaseNotYetCommencedAmount	11300000	USD
CY2019Q4	exas	Lessee Operating Lease Lease Not Yet Commenced Amount LesseeOperatingLeaseLeaseNotYetCommencedAmount	11300000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3600000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2273000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2600000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	95166000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	37133000	USD
CY2019Q4	exas	Promotional Agreement Accrued Expenses PromotionalAgreementAccruedExpenses	33230000	USD
CY2018Q4	exas	Promotional Agreement Accrued Expenses PromotionalAgreementAccruedExpenses	5364000	USD
CY2019Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	29108000	USD
CY2018Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	13779000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	13976000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4052000	USD
CY2019Q4	us-gaap	Construction Payable Current ConstructionPayableCurrent	10720000	USD
CY2018Q4	us-gaap	Construction Payable Current ConstructionPayableCurrent	32021000	USD
CY2019Q4	exas	Accrued Research And Trial Related Expenses Current AccruedResearchAndTrialRelatedExpensesCurrent	8368000	USD
CY2018Q4	exas	Accrued Research And Trial Related Expenses Current AccruedResearchAndTrialRelatedExpensesCurrent	6245000	USD
CY2019Q4	exas	Accrued Licenses Current AccruedLicensesCurrent	2761000	USD
CY2018Q4	exas	Accrued Licenses Current AccruedLicensesCurrent	2050000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	193329000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	100644000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	834000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	787000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	23379000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	25000000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	0	USD
CY2019Q4	exas	Convertible Notes Payable Gross ConvertibleNotesPayableGross	1162549000	USD
CY2018Q4	exas	Convertible Notes Payable Gross ConvertibleNotesPayableGross	908500000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	342463000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	227403000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	16481000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	16348000	USD
CY2019Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	803605000	USD
CY2018Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	664749000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	342463000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	227403000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	16481000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	16348000	USD
CY2019	exas	Debt Instrument Repurchase Price Due To Change In Control As Percentage Of Principal Amount DebtInstrumentRepurchasePriceDueToChangeInControlAsPercentageOfPrincipalAmount	100
CY2019Q4	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	92.48
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2661000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	26291000	USD
CY2017	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	39595000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-10558000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2019	exas	Coupon Interest Expense CouponInterestExpense	7325000	USD
CY2018	exas	Coupon Interest Expense CouponInterestExpense	7823000	USD
CY2017	exas	Coupon Interest Expense CouponInterestExpense	0	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	60139000	USD
CY2018	us-gaap	Interest Expense Debt InterestExpenseDebt	36387000	USD
CY2017	us-gaap	Interest Expense Debt InterestExpenseDebt	0	USD
CY2019	us-gaap	Interest Expense Other InterestExpenseOther	1460000	USD
CY2018	us-gaap	Interest Expense Other InterestExpenseOther	402000	USD
CY2017	us-gaap	Interest Expense Other InterestExpenseOther	206000	USD
CY2019	us-gaap	Interest Expense InterestExpense	61599000	USD
CY2018	us-gaap	Interest Expense InterestExpense	36789000	USD
CY2017	us-gaap	Interest Expense InterestExpense	206000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2018	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2018	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	11800000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7400000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4300000	USD
CY2019Q4	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	90	country
CY2019	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	2500000000	USD
CY2018	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	24500000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	876293000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	454462000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	265989000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-184858000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	92000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-187000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-184900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	369695000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	226276000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	51030000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	21417000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	33378000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	18265000	USD
CY2019Q4	exas	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	30782000	USD
CY2018Q4	exas	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7049000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	6103000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	491934000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	272061000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	120679000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	209868000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	371255000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	62193000	USD
CY2019Q4	exas	Deferred Tax Liabilities Convertible Notes DeferredTaxLiabilitiesConvertibleNotes	83163000	USD
CY2018Q4	exas	Deferred Tax Liabilities Convertible Notes DeferredTaxLiabilitiesConvertibleNotes	55698000	USD
CY2019Q4	exas	Deferred Tax Liabilities Amortization DeferredTaxLiabilitiesAmortization	270421000	USD
CY2018Q4	exas	Deferred Tax Liabilities Amortization DeferredTaxLiabilitiesAmortization	2182000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5913000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3966000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	29586000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2607000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	347000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	391690000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	62193000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	20435000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	120700000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	209900000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	20400000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-89200000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-4400000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.058
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.034
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.024
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.004
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.992
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.006
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.001
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.011
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	-0.019
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.019
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.221
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.091
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.167
CY2019	exas	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Cost Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationCostPercent	-0.041
CY2018	exas	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Cost Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationCostPercent	-0.049
CY2017	exas	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Cost Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationCostPercent	-0.107
CY2019	exas	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCostsPercent	-0.007
CY2018	exas	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCostsPercent	0
CY2017	exas	Effective Income Tax Rate Reconciliation Nondeductible Expense Transaction Costs Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseTransactionCostsPercent	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.011
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.026
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.240
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.317
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.604
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.688
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.001
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.002
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	10300000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	10300000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1900000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1926000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2142000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	392000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6208000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1534000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10276000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1926000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	162043000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	199870000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	218805000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	295575000	USD
CY2019Q1	us-gaap	Cost Of Revenue CostOfRevenue	42827000	USD
CY2019Q2	us-gaap	Cost Of Revenue CostOfRevenue	51139000	USD
CY2019Q2	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	63641000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	80472000	USD
CY2019Q4	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	144414000	USD
CY2019Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	760000	USD
CY2019Q3	us-gaap	Cost Of Revenue CostOfRevenue	52335000	USD
CY2019Q4	us-gaap	Cost Of Revenue CostOfRevenue	70416000	USD
CY2019Q1	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	31785000	USD
CY2019Q2	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	29972000	USD
CY2019Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	34714000	USD
CY2019Q4	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	43223000	USD
CY2019Q1	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	90939000	USD
CY2019Q2	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	88190000	USD
CY2019Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	86196000	USD
CY2019Q4	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	119851000	USD
CY2019Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	63926000	USD
CY2019Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	748000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-12712000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-13209000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	748000	USD
CY2019Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13779000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-68194000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-33820000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-35660000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-96108000	USD
CY2019Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	6655000	USD
CY2019Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	7669000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	9093000	USD
CY2019Q4	us-gaap	Investment Income Interest InvestmentIncomeInterest	3113000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-21990000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-13688000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-83529000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-38863000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-39776000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-106683000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-470000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-443000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	683000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-184628000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-83059000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-38420000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-40459000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	77945000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.66
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.30
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.31
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.66
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.30
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.31
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	118291000	USD
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	126248000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	129182000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	129567000	shares
CY2019Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	139901000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	126248000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129182000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129567000	shares
CY2019Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	143200000	shares
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	90296000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	102894000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	142981000	USD
CY2018Q1	us-gaap	Cost Of Revenue CostOfRevenue	22579000	USD
CY2018Q2	us-gaap	Cost Of Revenue CostOfRevenue	26553000	USD
CY2018Q3	us-gaap	Cost Of Revenue CostOfRevenue	29685000	USD
CY2018Q4	us-gaap	Cost Of Revenue CostOfRevenue	37827000	USD
CY2018Q1	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14704000	USD
CY2018Q2	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14481000	USD
CY2018Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	17400000	USD
CY2018Q4	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	20700000	USD
CY2018Q1	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	53408000	USD
CY2018Q2	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	54431000	USD
CY2018Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	64836000	USD
CY2018Q4	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	76773000	USD
CY2018Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	35531000	USD
CY2018Q2	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	39529000	USD
CY2018Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	46693000	USD
CY2018Q4	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	56263000	USD
CY2018Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	602000	USD
CY2018Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	602000	USD
CY2018Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	602000	USD
CY2018Q4	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	734000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-36528000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-32702000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-40925000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-49316000	USD
CY2018Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	3673000	USD
CY2018Q2	us-gaap	Investment Income Interest InvestmentIncomeInterest	4917000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	6292000	USD
CY2018Q4	us-gaap	Investment Income Interest InvestmentIncomeInterest	6321000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-6510000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-8603000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-10704000	USD
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-10972000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-39365000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-36388000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-45337000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-53967000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	59000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-39424000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	-36387000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-45364000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-53974000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.33
CY2018Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.30
CY2018Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.37
CY2018Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.44
CY2018Q1	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	121016000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	122129000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	122671000	shares
CY2018Q4	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	122981000	shares

Files In Submission

Name	View Source	Status
0001124140-20-000010-index-headers.html	Edgar Link	pending
0001124140-20-000010-index.html	Edgar Link	pending
0001124140-20-000010.txt	Edgar Link	pending
0001124140-20-000010-xbrl.zip	Edgar Link	pending
exas-20191231.htm	Edgar Link	pending
exas-20191231.xsd	Edgar Link	pending
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exas-20191231_cal.xml	Edgar Link	unprocessable
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exas-20191231_htm.xml	Edgar Link	completed
exas-20191231_lab.xml	Edgar Link	unprocessable
exas-20191231_pre.xml	Edgar Link	unprocessable
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FilingSummary.xml	Edgar Link	unprocessable
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$EXAS
EXACT SCIENCES CORP Stock $exas

2019 Q4 Form 10-K Financial Statement

#000112414020000010 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXAS EXACT SCIENCES CORP Stock $exas

2019 Q4 Form 10-K Financial Statement

#000112414020000010 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXAS
EXACT SCIENCES CORP Stock $exas