$TNDM
TANDEM DIABETES CARE INC Stock $tndm

$tndm Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000143813322000021 Filed on February 22, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$210.0M	$702.8M	$168.1M
YoY Change	24.95%	40.89%	55.04%
Cost Of Revenue	$96.27M	$326.6M	$77.50M
YoY Change	24.22%	37.04%	61.12%
Gross Profit	$113.7M	$376.2M	$90.56M
YoY Change	25.59%	44.41%	50.25%
Gross Profit Margin	54.16%	53.53%	53.88%
Selling, General & Admin	$71.50M	$261.5M	$54.50M
YoY Change	31.19%	27.63%	19.52%
% of Gross Profit	62.87%	69.51%	60.18%
Research & Development	$29.49M	$92.05M	$17.40M
YoY Change	69.49%	44.8%	38.1%
% of Gross Profit	25.93%	24.47%	19.21%
Depreciation & Amortization	$3.520M	$13.85M	$3.430M
YoY Change	2.62%	32.48%	109.15%
% of Gross Profit	3.1%	3.68%	3.79%
Operating Expenses	$101.0M	$353.6M	$71.89M
YoY Change	40.47%	31.69%	23.68%
Operating Profit	$12.74M	$22.65M	$18.66M
YoY Change	-31.74%	-384.69%	770.43%
Interest Expense	-$1.593M	-$6.752M	-$1.600M
YoY Change	-0.44%	-76.14%	-366.67%
% of Operating Profit	-12.51%	-29.81%	-8.57%
Other Income/Expense, Net		-$6.752M
YoY Change		-76.16%
Pretax Income	$11.15M	$15.90M	$17.00M
YoY Change	-34.44%	-143.83%	529.63%
Income Tax	$337.0K	$335.0K	$0.00
% Of Pretax Income	3.02%	2.11%	0.0%
Net Earnings	$10.81M	$15.57M	$17.00M
YoY Change	-36.42%	-145.27%	541.03%
Net Earnings / Revenue	5.15%	2.21%	10.12%
Basic Earnings Per Share	$0.17	$0.25	$0.27
Diluted Earnings Per Share	$0.16	$0.24	$0.22
COMMON SHARES
Basic Shares Outstanding	63.65M shares	63.00M shares	62.25M shares
Diluted Shares Outstanding	65.93M shares	64.35M shares	65.68M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$623.8M	$623.8M	$484.9M
YoY Change	28.65%	28.65%	174.8%
Cash & Equivalents	$71.18M	$71.18M	$94.61M
Short-Term Investments	$552.6M	$552.6M	$390.3M
Other Short-Term Assets	$8.433M	$8.433M	$6.400M
YoY Change	31.77%	31.77%	60.0%
Inventory	$68.55M	$68.55M	$63.72M
Prepaid Expenses
Receivables	$110.7M	$110.7M	$82.20M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$811.5M	$811.5M	$637.2M
YoY Change	27.35%	27.36%	130.76%
LONG-TERM ASSETS
Property, Plant & Equipment	$50.39M	$77.89M	$50.02M
YoY Change	0.73%	11.59%	51.94%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$15.73M	$9.092M	$9.385M
YoY Change	67.59%	1415.33%	531.99%
Total Long-Term Assets	$93.62M	$93.62M	$79.18M
YoY Change	18.23%	18.2%	58.46%
TOTAL ASSETS
Total Short-Term Assets	$811.5M	$811.5M	$637.2M
Total Long-Term Assets	$93.62M	$93.62M	$79.18M
Total Assets	$905.1M	$905.1M	$716.4M
YoY Change	26.34%	26.35%	119.69%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$28.03M	$28.03M	$17.81M
YoY Change	57.44%	57.48%	0.34%
Accrued Expenses	$9.419M	$70.25M	$4.783M
YoY Change	96.93%	45.15%	-40.32%
Deferred Revenue	$10.18M		$6.082M
YoY Change	67.41%		57.2%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$131.9M	$131.9M	$103.9M
YoY Change	26.97%	26.91%	4.48%
LONG-TERM LIABILITIES
Long-Term Debt	$281.5M	$281.5M	$203.0M
YoY Change	38.65%	38.65%
Other Long-Term Liabilities	$17.84M	$58.70M	$27.36M
YoY Change	-34.8%	35.57%	54.82%
Total Long-Term Liabilities	$17.84M	$340.2M	$27.36M
YoY Change	-34.8%	38.11%	54.82%
TOTAL LIABILITIES
Total Short-Term Liabilities	$131.9M	$131.9M	$103.9M
Total Long-Term Liabilities	$17.84M	$340.2M	$27.36M
Total Liabilities	$472.0M	$472.0M	$350.1M
YoY Change	34.82%	34.83%	166.99%
SHAREHOLDERS EQUITY
Retained Earnings	-$634.6M		-$659.2M
YoY Change	-3.73%		5.5%
Common Stock	$1.068B		$1.025B
YoY Change	4.2%		25.08%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$433.1M	$433.1M	$366.3M
YoY Change
Total Liabilities & Shareholders Equity	$905.1M	$905.1M	$716.4M
YoY Change	26.34%	26.35%	119.69%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$10.81M	$15.57M	$17.00M
YoY Change	-36.42%	-145.27%	541.03%
Depreciation, Depletion And Amortization	$3.520M	$13.85M	$3.430M
YoY Change	2.62%	32.48%	109.15%
Cash From Operating Activities	$19.63M	$111.4M	$15.24M
YoY Change	28.84%	351.41%	-21.65%
INVESTING ACTIVITIES
Capital Expenditures	-$5.746M	$14.18M	-$4.090M
YoY Change	40.49%	-48.26%	-39.41%
Acquisitions
YoY Change
Other Investing Activities	-$71.07M	-$163.4M	-$55.53M
YoY Change	27.99%	-38.06%	292.44%
Cash From Investing Activities	-$76.82M	-$186.9M	-$59.63M
YoY Change	28.82%	-36.88%	185.17%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$51.34M
YoY Change		-23.22%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	15.89M	$51.93M	9.210M
YoY Change	72.49%	-83.48%	43.46%
NET CHANGE
Cash From Operating Activities	19.63M	$111.4M	15.24M
Cash From Investing Activities	-76.82M	-$186.9M	-59.63M
Cash From Financing Activities	15.89M	$51.93M	9.210M
Net Change In Cash	-41.30M	-$23.43M	-35.18M
YoY Change	17.39%	-153.94%	-809.27%
FREE CASH FLOW
Cash From Operating Activities	$19.63M	$111.4M	$15.24M
Capital Expenditures	-$5.746M	$14.18M	-$4.090M
Free Cash Flow	$25.38M	$97.18M	$19.33M
YoY Change	31.3%	-3647.97%	-26.22%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001438133
CY2020	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate202006Member
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-36189
CY2021	dei	Entity Registrant Name EntityRegistrantName	Tandem Diabetes Care, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	20-4327508
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	11075 Roselle Street
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	92121
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	San Diego
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2021	dei	City Area Code CityAreaCode	858
CY2021	dei	Local Phone Number LocalPhoneNumber	366-6900
CY2021	dei	Security12b Title Security12bTitle	Common Stock, par value $0.001 per share
CY2021	dei	Trading Symbol TradingSymbol	TNDM
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2021	dei	Entity Shell Company EntityShellCompany	false
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CY2021	dei	Auditor Firm AuditorFirmId	42
CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	San Diego, California
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CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	64349000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	60990000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	58507000	shares
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	131275000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	77000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	58000	USD
CY2020	tndm	Stock Issued During Period Value Common Stock Warrants Exercised StockIssuedDuringPeriodValueCommonStockWarrantsExercised	2950000	USD
CY2020	tndm	Fair Value Of Common Stock Warrants At Time Of Exercise FairValueOfCommonStockWarrantsAtTimeOfExercise	26335000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	85803000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Subsequent Adjustments AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments	34069000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	57725000	USD
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-20000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	41823000	USD
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	-1551000	USD
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	11069000	USD
CY2021	tndm	Stock Issued During Period Value Common Stock Warrants Exercised StockIssuedDuringPeriodValueCommonStockWarrantsExercised	899000	USD
CY2021	tndm	Fair Value Of Common Stock Warrants At Time Of Exercise FairValueOfCommonStockWarrantsAtTimeOfExercise	15500000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	61091000	USD
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-693000	USD
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-143000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	15566000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	433112000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	15566000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-34382000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-24753000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13845000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	10451000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6072000	USD
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1727000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	10096000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	0	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2333000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3016000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2322000	USD
CY2021	us-gaap	Inventory Write Down InventoryWriteDown	467000	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	-57000	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	2353000	USD
CY2021	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	1386000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	17087000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	11075000	USD
CY2021	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-365000	USD
CY2020	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	1296000	USD
CY2019	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	565000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2126000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-25000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	60752000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	58431000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	58071000	USD
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	546000	USD
CY2020	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	38000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-295000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	30980000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	38837000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	13698000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4954000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	15361000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	30975000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1570000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2427000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	584000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1313000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-129000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	580000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	10275000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1118000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	8910000	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	4640000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-3256000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	4076000	USD
CY2021	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	17399000	USD
CY2020	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	5339000	USD
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	4285000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	10611000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	7029000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	4589000	USD
CY2021	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	6217000	USD
CY2020	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	5789000	USD
CY2019	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	4216000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	545735000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	180922000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	1421000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	3888000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	7412000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	111359000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	24669000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	41906000	USD
CY2021	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	733388000	USD
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	497076000	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	164572000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	114908000	USD
CY2021	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	24288000	USD
CY2020	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	52392000	USD
CY2019	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	12250000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	14180000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	71181000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	94613000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	27408000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	19541000	USD
CY2021	tndm	Payments To Acquire Intangible Assets And Equity Investments PaymentsToAcquireIntangibleAssetsAndEquityInvestments	9331000	USD
CY2020	tndm	Payments To Acquire Intangible Assets And Equity Investments PaymentsToAcquireIntangibleAssetsAndEquityInvestments	4886000	USD
CY2019	tndm	Payments To Acquire Intangible Assets And Equity Investments PaymentsToAcquireIntangibleAssetsAndEquityInvestments	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-186876000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-296056000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-56955000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	8809000	USD
CY2021	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	278691000	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2021	tndm	Payments For Capped Call Transactions PaymentsForCappedCallTransactions	0	USD
CY2020	tndm	Payments For Capped Call Transactions PaymentsForCappedCallTransactions	34069000	USD
CY2019	tndm	Payments For Capped Call Transactions PaymentsForCappedCallTransactions	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	51340000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	66866000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	23880000	USD
CY2021	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	592000	USD
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	2950000	USD
CY2019	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	327000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	51932000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	314438000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	24207000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	153000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	387000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	191000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-23432000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	43438000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	9349000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	94613000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	51175000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	41826000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	51175000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	4313000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	2707000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	260000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	177000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	67000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15191000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	11022000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	11635000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1034000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1082000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2134000	USD
CY2021	tndm	Intangible Costs In Other Current And Other Long Term Liabilities IntangibleCostsInOtherCurrentAndOtherLongTermLiabilities	1029000	USD
CY2020	tndm	Intangible Costs In Other Current And Other Long Term Liabilities IntangibleCostsInOtherCurrentAndOtherLongTermLiabilities	2244000	USD
CY2019	tndm	Intangible Costs In Other Current And Other Long Term Liabilities IntangibleCostsInOtherCurrentAndOtherLongTermLiabilities	0	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:12pt;text-indent:45pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in the Company’s consolidated financial statements and accompanying notes as of the date of the consolidated financial statements. Some of those judgments can be subjective and complex, and therefore, actual results could differ materially from those estimates under different assumptions or conditions.</span></div>
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentration of Credit Risk</span></div><div style="margin-top:12pt;text-indent:45pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, short-term investments and accounts receivable. The Company maintains deposit accounts in federally insured financial institutions in excess of federally insured limits. The Company also maintains investments in money market funds that are not federally insured. Additionally, the Company has established guidelines regarding investment instruments and their maturities, which are designed to maintain preservation of principal and liquidity.</span></div>
CY2021	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	18768000	USD
CY2020	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	13736000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	10167000	USD
CY2021	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-510000	USD
CY2021Q2	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	8100000	USD
CY2021Q2	tndm	Investment Owned Ownership Interest InvestmentOwnedOwnershipInterest	0.05
CY2021	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2021	tndm	Offered Period For Sales Return Prior To Expiration OfferedPeriodForSalesReturnPriorToExpiration	P30D
CY2021Q4	tndm	Allowance For Sales Returns AllowanceForSalesReturns	600000	USD
CY2020Q4	tndm	Allowance For Sales Returns AllowanceForSalesReturns	600000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	22075000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	16724000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	9138000	USD
CY2021	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	27604000	USD
CY2020	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	21135000	USD
CY2019	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	18335000	USD
CY2020	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-2048000	USD
CY2019	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-582000	USD
CY2021Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	30401000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	22075000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	16724000	USD
CY2021Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	30400000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	22100000	USD
CY2021Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	13076000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	8409000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	8409000	USD
CY2021Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	17325000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	13666000	USD
CY2020Q4	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	13666000	USD
CY2021Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	30401000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	22075000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	15566000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	15566000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	63000000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	157000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	64349000	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	5679000	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	7086000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6235000	shares
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	553254000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	15000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	639000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	552630000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	390254000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	86000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	17000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	390323000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	417733000	USD
CY2021Q4	tndm	Debt Securities Available For Sale Fair Value Maturity Allocated And Single Maturity Date After Year One Through Two DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo	134897000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	552630000	USD
CY2021Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	114974000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross AccountsReceivableGross	86052000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4249000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3857000	USD
CY2021Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	110725000	USD
CY2020Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	82195000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3857000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3304000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1837000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2333000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3016000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2322000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	1941000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	2463000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	17177000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	68551000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	63721000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	855000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4249000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3857000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3304000	USD
CY2021Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	26911000	USD
CY2020Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	30880000	USD
CY2021Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	16612000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	15664000	USD
CY2021Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	25028000	USD
CY2021Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	10793000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5803505	shares
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	99555000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	88955000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	49169000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	38933000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	50386000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	50022000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	11700000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	9200000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	5700000	USD
CY2021	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P41M
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	52.08
CY2020	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P52M
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2200000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1200000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	300000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1900000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1900000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1900000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	900000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	14261000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	23509000	USD
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y10M24D
CY2021Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	214510	shares
CY2021Q4	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Each Warrant Or Right ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight	1	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7174927	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	38.40
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y5M12D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	181408000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1130040	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	83.55
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2339467	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	24.69
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	161688000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	161995	shares
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	1386000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	17087000	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	15500000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	26335000	USD
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	147000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	14261000	USD
CY2020Q3	tndm	Operating Lease Number Of Buildings Leased OperatingLeaseNumberOfBuildingsLeased	4	building
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	8627000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	7514000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	4542000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	90000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	219000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	268649000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	355008	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	86.68
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1128791	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	37.05
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	86149000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	165000	USD
CY2021	us-gaap	Lease Cost LeaseCost	8717000	USD
CY2020	us-gaap	Lease Cost LeaseCost	7733000	USD
CY2019	us-gaap	Lease Cost LeaseCost	4707000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	9281000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	6949000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	5744000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5825000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5531000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	5144000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	38474000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5273000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	33201000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9279000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	23922000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y8M12D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.056
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.059
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	27.00
CY2020	tndm	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodAggregateIntrinsicValue	4516000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	9500000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	8200000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	215372	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	76.29
CY2021	tndm	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodAggregateIntrinsicValue	6963000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4814350	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	57.08
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y25D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	452081000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	4769317	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	56.95
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P7Y21D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	448460000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3013030	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	49.28
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y6M
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	307235000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-24604000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	60752000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	58431000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	58071000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	600000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	129200000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y7M6D
CY2021	tndm	Defined Contribution Plan Minimum Age Of Employee DefinedContributionPlanMinimumAgeOfEmployee	P18Y
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	15211000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-36667000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-24888000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	690000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	385000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	284000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	15901000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-36282000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	174000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	75000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	86000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	161000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	151000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	88000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	335000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	226000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	174000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1760000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-21000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-366000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-4000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2126000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-25000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	335000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1900000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	149000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3339000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-7619000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-5167000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-254000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-2792000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1174000	USD
CY2021	tndm	Income Tax Reconciliation Warrants Revaluation IncomeTaxReconciliationWarrantsRevaluation	356000	USD
CY2020	tndm	Income Tax Reconciliation Warrants Revaluation IncomeTaxReconciliationWarrantsRevaluation	3588000	USD
CY2019	tndm	Income Tax Reconciliation Warrants Revaluation IncomeTaxReconciliationWarrantsRevaluation	2326000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	5703000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	5330000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	2091000	USD
CY2021	tndm	Effective Income Tax Rate Reconciliation Net Operating Loss Carryforward EffectiveIncomeTaxRateReconciliationNetOperatingLossCarryforward	-97000	USD
CY2020	tndm	Effective Income Tax Rate Reconciliation Net Operating Loss Carryforward EffectiveIncomeTaxRateReconciliationNetOperatingLossCarryforward	1021000	USD
CY2019	tndm	Effective Income Tax Rate Reconciliation Net Operating Loss Carryforward EffectiveIncomeTaxRateReconciliationNetOperatingLossCarryforward	25043000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-7609000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-18309000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-8974000	USD
CY2021	tndm	Effective Income Tax Rate Reconciliation Officers Compensation EffectiveIncomeTaxRateReconciliationOfficersCompensation	4024000	USD
CY2020	tndm	Effective Income Tax Rate Reconciliation Officers Compensation EffectiveIncomeTaxRateReconciliationOfficersCompensation	2612000	USD
CY2019	tndm	Effective Income Tax Rate Reconciliation Officers Compensation EffectiveIncomeTaxRateReconciliationOfficersCompensation	3133000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	124000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	479000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	972000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	6155000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	24450000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-13919000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	335000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1900000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	149000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	146400000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	121600000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	78961000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	86898000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	16761000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	11261000	USD
CY2021Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	5135000	USD
CY2020Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	6840000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	28970000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	24038000	USD
CY2021Q4	tndm	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	8012000	USD
CY2020Q4	tndm	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	6112000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	20608000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	12096000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	158447000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	147245000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	11224000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3847000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7675000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8177000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6719000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	12024000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	25618000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	146423000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	121627000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10107000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6580000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8824000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3482000	USD
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CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1076000	USD
CY2021	tndm	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	tndm	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	1293000	USD
CY2019	tndm	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	-3320000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13589000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10107000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6580000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	11800000	USD
CY2020Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	0	USD
CY2021Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	0	USD
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	702799000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	498830000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	362305000	USD
CY2020Q2	us-gaap	Loss Contingency New Claims Filed Number LossContingencyNewClaimsFiledNumber	4	lawsuit
CY2020Q2	us-gaap	Loss Contingency New Claims Filed Number LossContingencyNewClaimsFiledNumber	3	lawsuit
CY2020Q2	us-gaap	Loss Contingency New Claims Filed Number LossContingencyNewClaimsFiledNumber	3	lawsuit
CY2021Q1	tndm	Loss Contingency Number Of Plaintiffs To Dismissed LossContingencyNumberOfPlaintiffsToDismissed	3	Plaintiff
CY2021Q1	us-gaap	Loss Contingency Number Of Plaintiffs LossContingencyNumberOfPlaintiffs	2	Plaintiff
CY2020	tndm	Number Of Legal Proceedings Regulatory Matters Or Other Disputes Or Claims NumberOfLegalProceedingsRegulatoryMattersOrOtherDisputesOrClaims	0	legal_matter
CY2021	tndm	Number Of Legal Proceedings Regulatory Matters Or Other Disputes Or Claims NumberOfLegalProceedingsRegulatoryMattersOrOtherDisputesOrClaims	0	legal_matter
CY2021Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	4900000	USD
CY2021Q4	us-gaap	Purchase Obligation PurchaseObligation	255000000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	251000000	USD
CY2021Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	209996000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	168065000	USD
CY2021Q4	us-gaap	Gross Profit GrossProfit	113729000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	90556000	USD
CY2021Q4	us-gaap	Operating Expenses OperatingExpenses	100991000	USD
CY2020Q4	us-gaap	Operating Expenses OperatingExpenses	71894000	USD
CY2021Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	12738000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	18662000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	10808000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	17000000	USD
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	10808000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	17000000	USD
CY2021Q4	us-gaap	Dilutive Securities DilutiveSecurities	32000	USD
CY2020Q4	us-gaap	Dilutive Securities DilutiveSecurities	-2819000	USD
CY2021Q4	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	10840000	USD
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	14181000	USD
CY2021Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	63650000	shares
CY2020Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	62249000	shares
CY2021Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65927000	shares
CY2020Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65678000	shares

Files In Submission

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2021 Q4 Form 10-K Financial Statement

#000143813322000021 Filed on February 22, 2022

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$TNDM TANDEM DIABETES CARE INC Stock $tndm

2021 Q4 Form 10-K Financial Statement

#000143813322000021 Filed on February 22, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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TANDEM DIABETES CARE INC Stock $tndm