XML 76 R46.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Financial Instruments - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized Cost |  |
Cash, cash equivalents and marketable securities | $ 1,043,887 | $ 981,569
Gross Unrealized Gains |  |
Marketable securities |  | 7
Gross Unrealized Losses |  |
Marketable securities |  | (812)
Fair Value |  |
Cash and cash equivalents | 1,043,887 | 937,438
Marketable securities, fair value |  | 43,326
Cash, cash equivalents and marketable securities | 1,043,887 | 980,764
Cash |  |
Amortized Cost |  |
Cash and cash equivalents | 752,423 | 887,682
Fair Value |  |
Cash and cash equivalents | 752,423 | 887,682
Cash and cash equivalents |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 1,043,887 | 937,438
Cash and cash equivalents | Cash |  |
Fair Value |  |
Cash and cash equivalents | 752,423 | 887,682
Marketable securities, short-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 0 | 35,304
Marketable securities, long-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 0 | 8,022
Money market funds |  |
Amortized Cost |  |
Cash and cash equivalents | 291,464 | 49,756
Fair Value |  |
Cash and cash equivalents | 291,464 | 49,756
Money market funds | Cash and cash equivalents |  |
Fair Value |  |
Cash and cash equivalents | $ 291,464 | 49,756
Corporate bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost |  | 31,943
Gross Unrealized Gains |  |
Marketable securities |  | 5
Gross Unrealized Losses |  |
Marketable securities |  | (676)
Fair Value |  |
Marketable securities, fair value |  | 31,272
Corporate bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value |  | 28,704
Corporate bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value |  | 2,568
U.S. government treasury bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost |  | 4,855
Gross Unrealized Gains |  |
Marketable securities |  | 0
Gross Unrealized Losses |  |
Marketable securities |  | (99)
Fair Value |  |
Marketable securities, fair value |  | 4,756
U.S. government treasury bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value |  | 0
U.S. government treasury bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value |  | 4,756
Asset-backed securities |  |
Amortized Cost |  |
Marketable securities, amortized cost |  | 1,416
Gross Unrealized Gains |  |
Marketable securities |  | 2
Gross Unrealized Losses |  |
Marketable securities |  | (1)
Fair Value |  |
Marketable securities, fair value |  | 1,417
Asset-backed securities | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value |  | 719
Asset-backed securities | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value |  | 698
Municipal bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost |  | 702
Gross Unrealized Gains |  |
Marketable securities |  | 0
Gross Unrealized Losses |  |
Marketable securities |  | (2)
Fair Value |  |
Marketable securities, fair value |  | 700
Municipal bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value |  | 700
Municipal bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value |  | 0
U.S. government agency bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost |  | 5,215
Gross Unrealized Gains |  |
Marketable securities |  | 0
Gross Unrealized Losses |  |
Marketable securities |  | (34)
Fair Value |  |
Marketable securities, fair value |  | 5,181
U.S. government agency bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value |  | 5,181
U.S. government agency bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value |  | $ 0

X
- Definition Cash And Cash Equivalents, Amortized Cost + References No definition available. + Details
Name: | algn_CashAndCashEquivalentsAmortizedCost
Namespace Prefix: | algn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash And Cash Equivalents, And Debt Securities Available For Sale + References No definition available. + Details
Name: | algn_CashAndCashEquivalentsAndDebtSecuritiesAvailableForSale
Namespace Prefix: | algn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash And Cash Equivalents And Debt Securities Available For Sale, Amortized Cost + References No definition available. + Details
Name: | algn_CashAndCashEquivalentsAndDebtSecuritiesAvailableForSaleAmortizedCost
Namespace Prefix: | algn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financial Instruments, Amortized Cost + References No definition available. + Details
Name: | algn_FinancialInstrumentsAmortizedCostAbstract
Namespace Prefix: | algn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financial Instruments, Fair Value + References No definition available. + Details
Name: | algn_FinancialInstrumentsFairValueAbstract
Namespace Prefix: | algn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financial Instruments, Gross Unrealized Gain + References No definition available. + Details
Name: | algn_FinancialInstrumentsGrossUnrealizedGainAbstract
Namespace Prefix: | algn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financial Instruments, Gross Unrealized Loss + References No definition available. + Details
Name: | algn_FinancialInstrumentsGrossUnrealizedLossAbstract
Namespace Prefix: | algn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481830/320-10-45-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-4 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_CashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=algn_MarketableSecuritiesShortTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=algn_MarketableSecuritiesLongTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasuryBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |