XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.22.2

Debt - Narrative (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 31, 2021 USD ($) day $ / shares | Jan. 31, 2018 USD ($) day $ / shares | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Underwriting discounts and commissions and other offering expenses | $ |  |  | $ 16,023 |  | $ 16,023 |  | $ 11,539
Net proceeds | $ |  |  |  |  | 0 | $ 575,000 |
Loss on extinguishment of debt | $ |  |  | 0 | $ 17,689 | 0 | $ 17,689 |
0.75% convertible senior notes due 2028 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Initial conversion rate | 0.0307692 | 30.7692 |  |  |  |  |
1.75% convertible senior notes due 2025 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Initial conversion rate | 0.0255384 | 25.5384 |  |  |  |  |
Convertible Notes | 0.75% convertible senior notes due 2028 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount | $ | $ 575,000 |  |  |  |  |  |
Option to purchase additional debt | $ | 75,000 |  |  |  |  |  |
Underwriting discounts and commissions and other offering expenses | $ | 15,700 |  | 13,400 |  | $ 13,400 |  |
Net proceeds | $ | $ 559,300 |  |  |  |  |  |
Initial conversion price (in dollars per share) | $ / shares | $ 32.50 |  |  |  |  |  |
Remaining discount amortization period |  |  |  |  | 5 years 11 months 1 day |  |
Convertible Notes | 0.75% convertible senior notes due 2028 | Conversion Term (i) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days | 5 |  |  |  |  |  |
Threshold consecutive trading days | 5 |  |  |  |  |  |
Threshold percent of stock price trigger | 98.00% |  |  |  |  |  |
Convertible Notes | 0.75% convertible senior notes due 2028 | Conversion Term (ii) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days | 45 |  |  |  |  |  |
Threshold consecutive trading days | 10 |  |  |  |  |  |
Threshold percent of stock price trigger | 10.00% |  |  |  |  |  |
Convertible Notes | 0.75% convertible senior notes due 2028 | Conversion Term (iii) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days following fundamental change | 30 |  |  |  |  |  |
Convertible Notes | 0.75% convertible senior notes due 2028 | Conversion Term (iv) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days | 20 |  |  |  |  |  |
Threshold consecutive trading days | 30 |  |  |  |  |  |
Threshold percent of stock price trigger | 130.00% |  |  |  |  |  |
Convertible Notes | 1.75% convertible senior notes due 2025 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount | $ |  | $ 450,000 |  |  |  |  |
Option to purchase additional debt | $ |  | 50,000 |  |  |  |  |
Underwriting discounts and commissions and other offering expenses | $ |  | 14,200 | $ 2,600 |  | $ 2,600 |  |
Net proceeds | $ |  | $ 435,800 |  |  |  |  |
Repurchased amount | $ | $ 225,000 |  |  |  |  |  |
Loss on extinguishment of debt | $ | $ 17,700 |  |  |  |  |  |
Initial conversion price (in dollars per share) | $ / shares |  | $ 39.16 |  |  |  |  |
Remaining discount amortization period |  |  |  |  | 2 years 6 months 14 days |  |
Convertible Notes | 1.75% convertible senior notes due 2025 | Conversion Term (i) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days |  | 5 |  |  |  |  |
Threshold consecutive trading days |  | 5 |  |  |  |  |
Threshold percent of stock price trigger |  | 98.00% |  |  |  |  |
Convertible Notes | 1.75% convertible senior notes due 2025 | Conversion Term (ii) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days |  | 45 |  |  |  |  |
Threshold consecutive trading days |  | 10 |  |  |  |  |
Threshold percent of stock price trigger |  | 10.00% |  |  |  |  |
Convertible Notes | 1.75% convertible senior notes due 2025 | Conversion Term (iii) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days following fundamental change |  | 30 |  |  |  |  |
Convertible Notes | 1.75% convertible senior notes due 2025 | Conversion Term (iv) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Threshold trading days |  | 20 |  |  |  |  |
Threshold consecutive trading days |  | 30 |  |  |  |  |
Threshold percent of stock price trigger |  | 130.00% |  |  |  |  |

X
- Definition Convertible Debt Instrument, Discount Amortization Period, Remaining + References No definition available. + Details
Name: | insm_ConvertibleDebtInstrumentDiscountAmortizationPeriodRemaining
Namespace Prefix: | insm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument Convertible Trading Days Prior To Effective Data Of Fundamental Change + References No definition available. + Details
Name: | insm_DebtInstrumentConvertibleTradingDaysPriorToEffectiveDataOfFundamentalChange
Namespace Prefix: | insm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Option To Purchase Additional Debt + References No definition available. + Details
Name: | insm_DebtInstrumentOptionToPurchaseAdditionalDebt
Namespace Prefix: | insm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031898-161870 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21521-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21506-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionRatio1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value amount of debt instrument that was repurchased. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126972273&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126972273&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromConvertibleDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=insm_ZeroPointSevenFivePercentConvertibleSeniorNoteDue2028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=insm_OnePointSevenFivePercentConvertibleSeniorNoteDue2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleNotesPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | insm_DebtInstrumentConversionTermAxis=insm_DebtInstrumentConversionTermOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | insm_DebtInstrumentConversionTermAxis=insm_DebtInstrumentConversionTermTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | insm_DebtInstrumentConversionTermAxis=insm_DebtInstrumentConversionTermThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | insm_DebtInstrumentConversionTermAxis=insm_DebtInstrumentConversionTermFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |