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Commitments and Contingencies - Additional Information (Detail) € in Millions |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 17, 2018 USD ($) ft² | Sep. 30, 2021 USD ($) | Aug. 31, 2020 USD ($) | Jul. 31, 2019 USD ($) ft² | Nov. 30, 2009 USD ($) | Mar. 31, 2022 USD ($) ft² | Mar. 31, 2021 USD ($) | Jun. 30, 2021 | Mar. 31, 2022 EUR (€) ft² | Dec. 31, 2021 USD ($) | May 31, 2021 USD ($) | Dec. 31, 2004 EUR (€)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sublease income |  |  |  |  |  | $ 1,609,000 | $ 2,022,000 |  |  |  |  |
Cash paid for amounts included in the measurement of operating lease liabilities |  |  |  |  |  | 1,700,000 | 1,700,000 |  |  |  |  |
Long-term debt, net of debt discount |  |  |  |  |  | 4,741,000 |  |  |  | $ 5,010,000 |  |
Selling, general and administrative |  |  |  |  |  | 32,172,000 | 22,423,000 |  |  |  |  |
Symphony Dynamo Holdings LLC |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
License arrangement contingent consideration percentage |  |  |  |  | 50.00% |  |  |  |  |  |  |
License Arrangement Contingent Payment To Acquire License |  |  |  |  | $ 50,000,000 |  |  |  |  |  |  |
License arrangement upfront payment |  |  |  |  | $ 50,000,000 |  |  |  |  |  |  |
TriSalus |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Payment to holdings |  |  | $ 2,500,000 |  |  |  |  |  |  |  |  |
Payment received for Pre-commercialization milestone |  | $ 1,000,000.0 |  |  |  |  |  |  |  |  |  |
TriSalus | Asset Purchase Agreement |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Payment received for Pre-commercialization milestone |  | $ 500,000 |  |  |  |  |  |  |  |  |  |
Deutsche Bank Securities |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Letter of credit pledged as security | € |  |  |  |  |  |  |  |  |  |  |  | € 0.2
Collateralized certificate of deposit | € |  |  |  |  |  |  |  |  | € 0.2 |  |  |
2.50% Convertible Senior Notes Due 2026 |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  | 225,500,000 | 158,800,000 |  |  |  | $ 200,000,000.0 |
Long-term debt, net of debt discount |  |  |  |  |  | $ 4,700,000 |  |  |  |  |  |
Debt maturity date |  |  |  |  |  | May 15, 2026 |  |  |  |  |  |
Powell Street Sublease | Emeryville, California (Premises) |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Lease area | ft² |  |  |  | 23,976 |  | 8,053 |  |  | 8,053 |  |  |
Base rent per square feet |  |  |  | $ 3.90 |  | $ 4.65 |  |  |  |  |  |
Lease expiration date |  |  |  | Jun. 30, 2022 |  | Jul. 31, 2025 |  |  |  |  |  |
Option to extend |  |  |  |  |  | There is no option to extend the sublease term. |  |  |  |  |  |
Existence of option to extend |  |  |  |  |  |  |  | false |  |  |  |
Horton Street Master Lease |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of excess rent paid to landlord |  |  |  |  |  | 50.00% |  |  | 50.00% |  |  |
Horton Street Sublease | Emeryville, California (Premises) |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Lease area | ft² | 75,662 |  |  | 75,662 |  |  |  |  |  |  |  |
Base rent per square feet | $ 4.75 |  |  | $ 5.50 |  |  |  |  |  |  |  |
Lease expiration date |  |  |  | Mar. 31, 2031 |  |  |  |  |  |  |  |
Option to extend |  |  |  | The Horton Street Subtenant has no option to extend the sublease term. |  |  |  |  |  |  |  |
Existence of option to extend |  |  |  | false |  |  |  |  |  |  |  |
Operations commencement date | Apr. 01, 2019 |  |  |  |  |  |  |  |  |  |  |
Tenant improvement allowance | $ 8,100,000 |  |  |  |  |  |  |  |  |  |  |
Lease option to extend | The Horton Street Master Lease has an initial term of 12 years, following the Horton Street Commencement Date with an option to extend the lease for two successive five-year terms. |  |  |  |  |  |  |  |  |  |  |
Horton Street Sublease | Emeryville, California (Premises) | Other Income (Expense) |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sublease income |  |  |  |  |  | $ 1,600,000 | $ 2,000,000.0 |  |  |  |  |
Dusseldorf Lease | Germany |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Lease option to extend |  | The New Düsseldorf Lease has an initial term of 10 years, beginning on January 1, 2022, with an option to extend the lease for two successive five-year terms. |  |  |  |  |  |  |  |  |  |

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