$IRTC
iRhythm Technologies, Inc. Stock $irtc

$irtc Overview Financials Valuation SEC Filings Company Website

2020 Q1 Form 10-K Financial Statement

#000138865820000034 Filed on March 02, 2020

Income Statement

Concept	2020 Q1	2018 Q4	2018 Q3
Revenue	$63.54M	$41.78M	$38.44M
YoY Change	31.45%	48.25%	53.55%
Cost Of Revenue	$16.06M	$10.75M	$9.953M
YoY Change	36.44%	39.43%	43.83%
Gross Profit	$47.47M	$30.98M	$28.49M
YoY Change	29.84%	51.28%	57.26%
Gross Profit Margin	74.72%	74.14%	74.11%
Selling, General & Admin	$48.23M	$38.90M	$32.62M
YoY Change	26.7%	44.34%	60.64%
% of Gross Profit	101.6%	125.58%	114.51%
Research & Development	$8.415M	$7.110M	$5.086M
YoY Change	25.62%	71.33%	34.2%
% of Gross Profit	17.73%	22.95%	17.85%
Depreciation & Amortization	$1.550M	$600.0K	$560.0K
YoY Change	150.0%	20.0%	21.74%
% of Gross Profit	3.27%	1.94%	1.97%
Operating Expenses	$56.65M	$46.01M	$37.71M
YoY Change	26.54%	47.99%	56.48%
Operating Profit	-$9.173M	-$15.03M	-$9.221M
YoY Change	11.81%	41.64%	54.12%
Interest Expense	$380.0K	-$540.0K	$861.0K
YoY Change	-7.09%	-37.21%	-0.12%
% of Operating Profit
Other Income/Expense, Net	$505.0K	$420.0K	$355.0K
YoY Change	34.67%	23.53%	10.59%
Pretax Income	-$9.048M	-$16.77M	-$9.727M
YoY Change	9.83%	50.4%	49.19%
Income Tax	$17.00K	$40.00K	$0.00
% Of Pretax Income
Net Earnings	-$9.065M	-$16.27M	-$9.727M
YoY Change	9.88%	45.93%	49.1%
Net Earnings / Revenue	-14.27%	-38.94%	-25.3%
Basic Earnings Per Share
Diluted Earnings Per Share	-$337.9K	-$693.2K	-$425.6K
COMMON SHARES
Basic Shares Outstanding	26.80M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2020 Q1	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$121.8M	$78.34M	$81.20M
YoY Change	107.77%	-23.47%	-24.39%
Cash & Equivalents	$56.51M	$20.02M	$17.35M
Short-Term Investments	$65.26M	$58.32M	$63.80M
Other Short-Term Assets	$4.200M	$4.100M	$2.800M
YoY Change	10.53%	57.69%	40.0%
Inventory	$4.227M	$2.062M	$2.300M
Prepaid Expenses
Receivables	$24.21M	$19.79M	$19.98M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$154.4M	$104.3M	$106.2M
YoY Change	68.68%	-12.91%	-13.48%
LONG-TERM ASSETS
Property, Plant & Equipment	$28.45M	$9.158M	$8.300M
YoY Change	176.84%	45.46%	33.87%
Goodwill	$862.0K	$862.0K
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$0.00	$0.00	$0.00
YoY Change		-100.0%
Other Assets	$9.944M	$3.208M	$3.100M
YoY Change	178.23%	-7.42%	-18.42%
Total Long-Term Assets	$128.5M	$13.23M	$12.26M
YoY Change	442.78%	-2.86%	12.46%
TOTAL ASSETS
Total Short-Term Assets	$154.4M	$104.3M	$106.2M
Total Long-Term Assets	$128.5M	$13.23M	$12.26M
Total Assets	$282.9M	$117.5M	$118.5M
YoY Change	145.55%	-11.89%	-11.37%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$5.544M	$2.284M	$1.900M
YoY Change	182.86%	-4.63%	-9.52%
Accrued Expenses	$23.25M	$26.69M	$19.45M
YoY Change	13.2%	65.64%	67.65%
Deferred Revenue	$1.115M	$1.223M	$1.159M
YoY Change	-11.65%	-1.21%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$4.900M		$0.00
YoY Change			-100.0%
Total Short-Term Liabilities	$42.85M	$30.33M	$22.52M
YoY Change	49.14%	41.84%	40.73%
LONG-TERM LIABILITIES
Long-Term Debt	$30.08M	$34.90M	$32.60M
YoY Change	-13.88%	7.41%	1.56%
Other Long-Term Liabilities	$85.00M	$200.0K	$200.0K
YoY Change	2025.0%	0.0%	0.0%
Total Long-Term Liabilities	$30.08M	$34.90M	$32.80M
YoY Change	-13.88%	7.41%	1.55%
TOTAL LIABILITIES
Total Short-Term Liabilities	$42.85M	$30.33M	$22.52M
Total Long-Term Liabilities	$30.08M	$34.90M	$32.80M
Total Liabilities	$158.0M	$65.39M	$55.29M
YoY Change	133.74%	21.0%	14.54%
SHAREHOLDERS EQUITY
Retained Earnings	-$269.9M	-$205.8M	-$189.6M
YoY Change	26.09%	31.27%
Common Stock	$394.5M	$258.0M
YoY Change	50.77%	9.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$125.0M	$52.14M	$63.21M
YoY Change
Total Liabilities & Shareholders Equity	$282.9M	$117.5M	$118.5M
YoY Change	145.55%	-11.89%	-11.37%

Cashflow Statement

Concept	2020 Q1	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	-$9.065M	-$16.27M	-$9.727M
YoY Change	9.88%	45.93%	49.1%
Depreciation, Depletion And Amortization	$1.550M	$600.0K	$560.0K
YoY Change	150.0%	20.0%	21.74%
Cash From Operating Activities	-$22.37M	-$4.370M	-$5.100M
YoY Change	30.32%	17.47%	34.56%
INVESTING ACTIVITIES
Capital Expenditures	$3.405M	-$1.490M	-$1.460M
YoY Change	99.71%	63.74%	175.47%
Acquisitions
YoY Change
Other Investing Activities	$63.32M	$5.780M	$3.150M
YoY Change	125.5%	-160.46%	-52.77%
Cash From Investing Activities	$59.91M	$4.290M	$1.690M
YoY Change	127.12%	-140.97%	-72.48%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$2.969M
YoY Change	40.05%
Debt Paid & Issued, Net	$0.00
YoY Change
Cash From Financing Activities	-$1.493M	2.750M	1.520M
YoY Change	31.2%	13.17%	-12.64%
NET CHANGE
Cash From Operating Activities	-$22.37M	-4.370M	-5.100M
Cash From Investing Activities	$59.91M	4.290M	1.690M
Cash From Financing Activities	-$1.493M	2.750M	1.520M
Net Change In Cash	$36.05M	2.670M	-1.890M
YoY Change	346.3%	-122.7%	-146.21%
FREE CASH FLOW
Cash From Operating Activities	-$22.37M	-$4.370M	-$5.100M
Capital Expenditures	$3.405M	-$1.490M	-$1.460M
Free Cash Flow	-$25.77M	-$2.880M	-$3.640M
YoY Change	36.59%	2.49%	11.66%

Facts In Submission

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CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001388658
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Type DocumentType	10-K
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CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
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CY2019	dei	Entity File Number EntityFileNumber	001-37918
CY2019	dei	Entity Registrant Name EntityRegistrantName	iRhythm Technologies, Inc.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	20-8149544
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CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	9495000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	5288000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26241000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-54568000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	98000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	135409000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-54568000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-50378000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-29740000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3445000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2269000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1597000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	26241000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	16329000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	9752000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	37000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	210000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	260000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	884000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	907000	USD
CY2017	us-gaap	Paid In Kind Interest PaidInKindInterest	1550000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	352000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-75000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-9000	USD
CY2019	irtc	Provision For Bad Debt And Contractual Allowance ProvisionForBadDebtAndContractualAllowance	24647000	USD
CY2018	irtc	Provision For Bad Debt And Contractual Allowance ProvisionForBadDebtAndContractualAllowance	16448000	USD
CY2017	irtc	Provision For Bad Debt And Contractual Allowance ProvisionForBadDebtAndContractualAllowance	9222000	USD
CY2019	us-gaap	Paid In Kind Interest PaidInKindInterest	0	USD
CY2018	us-gaap	Paid In Kind Interest PaidInKindInterest	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3029000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2019	irtc	Repayment Of Interest Paid In Kind RepaymentOfInterestPaidInKind	0	USD
CY2018	irtc	Repayment Of Interest Paid In Kind RepaymentOfInterestPaidInKind	3141000	USD
CY2017	irtc	Repayment Of Interest Paid In Kind RepaymentOfInterestPaidInKind	0	USD
CY2019	irtc	Operating Lease Right Of Use Assets Amortization OperatingLeaseRightOfUseAssetsAmortization	8953000	USD
CY2018	irtc	Operating Lease Right Of Use Assets Amortization OperatingLeaseRightOfUseAssetsAmortization	0	USD
CY2017	irtc	Operating Lease Right Of Use Assets Amortization OperatingLeaseRightOfUseAssetsAmortization	0	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	28725000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21747000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	12471000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1974000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	380000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	293000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	696000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1568000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	795000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	4732000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-269000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	467000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5604000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-192000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	634000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	6002000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	10501000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	5757000	USD
CY2019	irtc	Increase Decrease In Deferred Rent IncreaseDecreaseInDeferredRent	0	USD
CY2018	irtc	Increase Decrease In Deferred Rent IncreaseDecreaseInDeferredRent	105000	USD
CY2017	irtc	Increase Decrease In Deferred Rent IncreaseDecreaseInDeferredRent	135000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	28000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-15000	USD
CY2017	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	291000	USD
CY2019	irtc	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-5241000	USD
CY2018	irtc	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	0	USD
CY2017	irtc	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-21863000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-29093000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-14911000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	20457000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5180000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3562000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	165915000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	93133000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	129829000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1498000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	5962000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	95600000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	126493000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	98707000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-89274000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	34142000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-34684000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	107369000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	9495000	USD
CY2018	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	9319000	USD
CY2017	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	6390000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	35000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5288000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3877000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	46000	USD
CY2019	irtc	Payments Of Deferred Offering Costs PaymentsOfDeferredOfferingCosts	0	USD
CY2018	irtc	Payments Of Deferred Offering Costs PaymentsOfDeferredOfferingCosts	0	USD
CY2017	irtc	Payments Of Deferred Offering Costs PaymentsOfDeferredOfferingCosts	-188000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	31500000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	121000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	2518000	USD
CY2017	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	111576000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	6303000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	6532000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	439000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	11352000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-43063000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	20023000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	8671000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	51734000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	20462000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	20023000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	8671000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1644000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	6065000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	1550000	USD
CY2019	irtc	Property And Equipment Included In Accounts Payable And Accrued Liabilities PropertyAndEquipmentIncludedInAccountsPayableAndAccruedLiabilities	293000	USD
CY2018	irtc	Property And Equipment Included In Accounts Payable And Accrued Liabilities PropertyAndEquipmentIncludedInAccountsPayableAndAccruedLiabilities	101000	USD
CY2017	irtc	Property And Equipment Included In Accounts Payable And Accrued Liabilities PropertyAndEquipmentIncludedInAccountsPayableAndAccruedLiabilities	110000	USD
CY2019	irtc	Stock Issuance Costs Incurred But Not Yet Paid StockIssuanceCostsIncurredButNotYetPaid	77000	USD
CY2018	irtc	Stock Issuance Costs Incurred But Not Yet Paid StockIssuanceCostsIncurredButNotYetPaid	0	USD
CY2017	irtc	Stock Issuance Costs Incurred But Not Yet Paid StockIssuanceCostsIncurredButNotYetPaid	0	USD
CY2019	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	88860000	USD
CY2018	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2017	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2019Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	1575342	shares
CY2019Q3	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	73.00
CY2019Q3	irtc	Underwriters Option To Purchase Additional Shares Of Common Stock UnderwritersOptionToPurchaseAdditionalSharesOfCommonStock	205479	shares
CY2019Q3	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	107300000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7296000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4486000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1792000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify;margin-top:18pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Use of Estimates</span></div><div style="text-indent:36pt;text-align:justify;"><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:115%;">The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, management evaluates its estimates, including those related to revenue recognition, contractual allowances for revenue, allowance for doubtful accounts, the useful lives of property and equipment, the recoverability of long-lived assets including the estimated usage of the printed circuit board assemblies (“PCBAs”), the incremental borrowing rate for operating leases, accounting for income taxes, the fair value of the Company’s common stock and stock-based compensation. The Company bases these estimates on historical and anticipated results, trends, and various other assumptions that the Company believes are reasonable under the circumstances, including assumptions as to future events. Actual results may differ from those estimates.</span></div>
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	9129000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	7353000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4558000	USD
CY2019	irtc	Allowance For Doubtful Accounts Receivable Write Offs Net Of Recoveries And Other Adjustments AllowanceForDoubtfulAccountsReceivableWriteOffsNetOfRecoveriesAndOtherAdjustments	7376000	USD
CY2018	irtc	Allowance For Doubtful Accounts Receivable Write Offs Net Of Recoveries And Other Adjustments AllowanceForDoubtfulAccountsReceivableWriteOffsNetOfRecoveriesAndOtherAdjustments	4543000	USD
CY2017	irtc	Allowance For Doubtful Accounts Receivable Write Offs Net Of Recoveries And Other Adjustments AllowanceForDoubtfulAccountsReceivableWriteOffsNetOfRecoveriesAndOtherAdjustments	1864000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9049000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7296000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4486000	USD
CY2018Q4	irtc	Accounts Receivable For Contractual Allowance AccountsReceivableForContractualAllowance	9205000	USD
CY2017Q4	irtc	Accounts Receivable For Contractual Allowance AccountsReceivableForContractualAllowance	6345000	USD
CY2016Q4	irtc	Accounts Receivable For Contractual Allowance AccountsReceivableForContractualAllowance	2340000	USD
CY2019	irtc	Accounts Receivable Allowance For Contractual Adjustments AccountsReceivableAllowanceForContractualAdjustments	15518000	USD
CY2018	irtc	Accounts Receivable Allowance For Contractual Adjustments AccountsReceivableAllowanceForContractualAdjustments	9095000	USD
CY2017	irtc	Accounts Receivable Allowance For Contractual Adjustments AccountsReceivableAllowanceForContractualAdjustments	4664000	USD
CY2019	irtc	Accounts Receivable Contractual Adjustments AccountsReceivableContractualAdjustments	9290000	USD
CY2018	irtc	Accounts Receivable Contractual Adjustments AccountsReceivableContractualAdjustments	6235000	USD
CY2017	irtc	Accounts Receivable Contractual Adjustments AccountsReceivableContractualAdjustments	659000	USD
CY2019Q4	irtc	Accounts Receivable For Contractual Allowance AccountsReceivableForContractualAllowance	15433000	USD
CY2018Q4	irtc	Accounts Receivable For Contractual Allowance AccountsReceivableForContractualAllowance	9205000	USD
CY2017Q4	irtc	Accounts Receivable For Contractual Allowance AccountsReceivableForContractualAllowance	6345000	USD
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Concentrations of Risk</span></div><div style="margin-top:6pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Credit Risk</span></div><div style="text-indent:36pt;text-align:justify;margin-top:6pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;">Financial instruments that potentially subject the Company to a concentration of credit risk consist primarily of cash and cash equivalents, investments and accounts receivable. Cash balances are deposited in financial institutions which, at times, may be in excess of federally insured limits. Cash equivalents are invested in highly rated money market funds. The Company invests in a variety of financial instruments, such as, but not limited to, United States Government securities, corporate notes, commercial paper and, by policy, limits the amount of credit exposure with any one financial institution or commercial issuer. The Company has not experienced any material losses on its deposits of cash and cash equivalents or investments.</span></div><div style="text-indent:36pt;"><span><br/></span></div><div style="text-indent:36pt;text-align:justify;"><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:115%;">Concentrations of credit risk with respect to accounts receivable are limited due to the large number of customers comprising the Company’s customer base and their dispersion across many geographies. The Company does not require collateral. The Company records an allowance for doubtful accounts when it becomes probable that a receivable will not be collected. Centers for Medicare and Medicaid Services (“CMS”), accounted for approximately 27%, 27% and 28% of the Company’s revenue for the years ended December 31, 2019, 2018 and 2017, respectively. CMS accounted for 20% and 20% of accounts receivable as of December 31, 2019 and 2018, respectively.</span></div>
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	214552000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	147277000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1200000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	141934000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	83000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	142016000	USD
CY2019Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	13897000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	120089000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	8030000	USD
CY2019Q4	irtc	Cash Equivalents And Current And Noncurrent Investments CashEquivalentsAndCurrentAndNoncurrentInvestments	142016000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	73427000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	19000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	73411000	USD
CY2018Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	15091000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	58320000	USD
CY2018Q4	irtc	Cash Equivalents And Current And Noncurrent Investments CashEquivalentsAndCurrentAndNoncurrentInvestments	73411000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Remainder Of Fiscal Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesRemainderOfFiscalYearFairValue	133986000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Remainder Of Fiscal Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesRemainderOfFiscalYearFairValue	73411000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	8030000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	0	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	142016000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	73411000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	17498000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	11000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2993000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	8000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	20491000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	19000	USD
CY2019	irtc	Available For Sale Debt Securities Maturity Period AvailableForSaleDebtSecuritiesMaturityPeriod	P126D
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	0	Right
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	142016000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	73411000	USD
CY2019Q4	irtc	Inventory And Printed Circuit Board Assemblies InventoryAndPrintedCircuitBoardAssemblies	4037000	USD
CY2018Q4	irtc	Inventory And Printed Circuit Board Assemblies InventoryAndPrintedCircuitBoardAssemblies	2062000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	26464000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	34096000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	14388000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7632000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5230000	USD
CY2018Q4	irtc	Accrued Employee Stock Purchase Plan Contribution AccruedEmployeeStockPurchasePlanContribution	373000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	9158000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3400000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2300000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1600000	USD
CY2019Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	3809000	USD
CY2018Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	2825000	USD
CY2019Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	19156000	USD
CY2018Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	18188000	USD
CY2019Q4	irtc	Accrued Employee Stock Purchase Plan Contribution AccruedEmployeeStockPurchasePlanContribution	417000	USD
CY2019Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	2846000	USD
CY2018Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	1249000	USD
CY2019Q4	irtc	Claims Payable Current ClaimsPayableCurrent	2802000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3556000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1679000	USD
CY2018Q4	irtc	Claims Payable Current ClaimsPayableCurrent	2374000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	32586000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	26688000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	11300000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	7900000	USD
CY2018Q4	irtc	Lessee Operating Sublease Option To Extend Amount LesseeOperatingSubleaseOptionToExtendAmount	1	Right
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	9253000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	11550000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	11330000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	11667000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	12015000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	87793000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	143608000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	49946000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	93662000	USD
CY2018Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0450
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	8135000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	10669000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	10828000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	11150000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	11483000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	98209000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	150474000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y7M6D
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CY2019Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0458
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
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CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2019Q4	us-gaap	Debt Current DebtCurrent	1944000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	32989000	USD
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CY2017	irtc	Tax Cuts And Jobs Act Of2017 Decrease In Deferred Tax Assets TaxCutsAndJobsActOf2017DecreaseInDeferredTaxAssets	22000000.0	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	68000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	80000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	68000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	80000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
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CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-36000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
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CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-36000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	65000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	44000	USD
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CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
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CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-10570000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-10143000	USD
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CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-8557000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-7634000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	409000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	309000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	198000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	614000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	148000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-145000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1128000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1015000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	644000	USD
CY2019	irtc	Income Tax Reconciliation Effect Of Tax Cuts And Jobs Act Of2017 IncomeTaxReconciliationEffectOfTaxCutsAndJobsActOf2017	0	USD
CY2017	irtc	Income Tax Reconciliation Effect Of Tax Cuts And Jobs Act Of2017 IncomeTaxReconciliationEffectOfTaxCutsAndJobsActOf2017	21969000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	17176000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	19685000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-3601000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	65000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	44000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	64648000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	50601000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	5601000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	4287000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5932000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3149000	USD
CY2019Q4	irtc	Deferred Tax Assets Valuation Allowances And Other DeferredTaxAssetsValuationAllowancesAndOther	11443000	USD
CY2018Q4	irtc	Deferred Tax Assets Valuation Allowances And Other DeferredTaxAssetsValuationAllowancesAndOther	8827000	USD
CY2019Q4	irtc	Deferred Tax Assets Lease Obligations DeferredTaxAssetsLeaseObligations	23869000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	111493000	USD
CY2019	irtc	Valuation Allowance Deferred Tax Asset Deductions ValuationAllowanceDeferredTaxAssetDeductions	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	66864000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	88433000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	66435000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	23060000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	429000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	850000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	388000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	22171000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	23021000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	388000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	39000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	41000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	0	USD
CY2019Q4	irtc	Operating Loss Carryforwards Tax Benefit Recognized OperatingLossCarryforwardsTaxBenefitRecognized	0	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	22000000.0	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	22100000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	44861000	USD
CY2017	irtc	Valuation Allowance Deferred Tax Asset Additions ValuationAllowanceDeferredTaxAssetAdditions	0	USD
CY2017	irtc	Valuation Allowance Deferred Tax Asset Deductions ValuationAllowanceDeferredTaxAssetDeductions	540000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	44321000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	66435000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	66435000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	44321000	USD
CY2018	irtc	Valuation Allowance Deferred Tax Asset Additions ValuationAllowanceDeferredTaxAssetAdditions	22114000	USD
CY2018	irtc	Valuation Allowance Deferred Tax Asset Deductions ValuationAllowanceDeferredTaxAssetDeductions	0	USD
CY2019	irtc	Valuation Allowance Deferred Tax Asset Additions ValuationAllowanceDeferredTaxAssetAdditions	21998000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	88433000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	259900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	153800000	USD
CY2019	irtc	Tax Credit Carryforwards Expiration Start Year TaxCreditCarryforwardsExpirationStartYear	2028
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1459000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	943000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	616000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	383000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	441000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	328000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	75000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	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
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1842000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1459000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	943000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1800000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1500000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	900000	USD
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CY2019Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	9098512	shares
CY2018Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	8253899	shares
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CY2019	irtc	Stock Issued During Period Shares Restricted Stock Award Vested StockIssuedDuringPeriodSharesRestrictedStockAwardVested	180842	shares
CY2019	us-gaap	Stock Issued During Period Shares Restricted Stock Award Forfeited StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited	110920	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2977218	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	6.16
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CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	70979000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	465271	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	36.76
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	827556	shares
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CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	13752	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	14.43
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2601181	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	12.24
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y2M1D
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	113958000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	366928	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	68.32
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	798424	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.19
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	75548	shares
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CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2094137	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.20
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y7D
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	97976000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	20010	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	82.77
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	540307	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	9.59
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	70593	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	54.54
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1503247	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	27.40
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y5M4D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	62401000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1147525	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y7D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	19.64
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	55919000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	1487867	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	27.07
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P6Y4M28D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	62220000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	38.29
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	32.38
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.69
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	36900000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	52400000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	32500000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	7800000	USD
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	5300000	USD
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	2400000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y1M6D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y1M6D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y1M6D
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.450
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.457
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.519
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0239
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0275
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0207
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.000
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26241000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	16329000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9752000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	8900000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y8M12D
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-54568000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-50378000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-29740000	USD
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	25265918	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	23885858	shares
CY2017	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	22627327	shares
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-2.16
CY2017	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.31
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2389277	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2646885	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3074464	shares
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	48334000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	52441000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	54673000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	59104000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	36561000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	39429000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	40888000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	45189000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-8250000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-10725000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-18293000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-17300000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.34
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.43
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.72
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.65
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	31762000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	35292000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	38441000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	41782000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	23212000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	25806000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	28488000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	30976000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-11077000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	41782000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-16270000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	-13304000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-9727000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.47
CY2018Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.56
CY2018Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.40
CY2018Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.67
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	52441000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	39429000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-10725000	USD
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.43
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	48334000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	36561000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-8250000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.34
CY2018Q4	us-gaap	Gross Profit GrossProfit	30976000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-16270000	USD
CY2018Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.67
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	35292000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	25806000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	-13304000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.56
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	31762000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	23212000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-11077000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	19790000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	104295000	USD
CY2018Q4	us-gaap	Assets Assets	117523000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	26688000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-50378000	USD
CY2018	irtc	Provision For Doubtful Accounts And Contractual Allowances ProvisionForDoubtfulAccountsAndContractualAllowances	16448000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1223000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	30334000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	65386000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-16000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-205825000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	52137000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	117523000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	147277000	USD
CY2018	us-gaap	Cost Of Revenue CostOfRevenue	38795000	USD
CY2018	us-gaap	Gross Profit GrossProfit	108482000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	20860000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	133313000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	154173000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-45691000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1501000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-50334000	USD
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	28203000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-50378000	USD
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-2.11
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	99129000	USD
CY2017	us-gaap	Gross Profit GrossProfit	70926000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	13265000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	85252000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	98517000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-27591000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-29740000	USD
CY2017	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-1.31
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-50378000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	49000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-50329000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-29740000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-29796000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21747000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	10501000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-15000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-29093000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	93133000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	34142000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-29740000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	9752000	USD
CY2017	irtc	Provision For Doubtful Accounts And Contractual Allowances ProvisionForDoubtfulAccountsAndContractualAllowances	9222000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	12471000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	5757000	USD
CY2017	irtc	Property Plant And Equipment Costs Included In Liabilities PropertyPlantAndEquipmentCostsIncludedInLiabilities	110000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	52137000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	79341000	USD

Files In Submission

Name	View Source	Status
0001388658-20-000034-index-headers.html	Edgar Link	pending
0001388658-20-000034-index.html	Edgar Link	pending
0001388658-20-000034.txt	Edgar Link	pending
0001388658-20-000034-xbrl.zip	Edgar Link	pending
exhibit231.htm	Edgar Link	pending
exhibit43.htm	Edgar Link	pending
exhibit44.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
irtc-20181231xex311.htm	Edgar Link	pending
irtc-20181231xex312.htm	Edgar Link	pending
irtc-20181231xex321.htm	Edgar Link	pending
irtc-20191231.htm	Edgar Link	pending
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irtc-20191231_g4.jpg	Edgar Link	pending
irtc-20191231_g5.jpg	Edgar Link	pending
irtc-20191231_g6.jpg	Edgar Link	pending
irtc-20191231_g7.jpg	Edgar Link	pending
irtc-20191231_g8.jpg	Edgar Link	pending
irtc-20191231_g9.jpg	Edgar Link	pending
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$IRTC
iRhythm Technologies, Inc. Stock $irtc

2020 Q1 Form 10-K Financial Statement

#000138865820000034 Filed on March 02, 2020

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$IRTC iRhythm Technologies, Inc. Stock $irtc

2020 Q1 Form 10-K Financial Statement

#000138865820000034 Filed on March 02, 2020

Income Statement

Balance Sheet

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Facts In Submission

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$IRTC
iRhythm Technologies, Inc. Stock $irtc