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v3.26.1

Leases (FY) (Details) $ in Thousands |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 04, 2024 USD ($) ft² | Feb. 20, 2024 USD ($) ft² | Sep. 29, 2023 USD ($) ft² | Aug. 07, 2023 USD ($) ft² | Jan. 31, 2025 | Mar. 31, 2026 USD ($) ft² item | Mar. 31, 2025 USD ($) | Dec. 31, 2025 USD ($) ft² item | Dec. 31, 2024 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Sublease Income |  |  |  |  |  | $ 356 | $ 367 | $ 1,467 | $ 987
Impairment of long-lived assets |  |  |  |  |  |  | 2,637 | 6,145 | 5,233
Impairment expenses for right of use assets |  |  |  |  |  | 0 | $ 0 | 2,633 | 2,516
Impairment expenses for property and equipment |  |  |  |  |  |  |  | 3,373 | 2,279
Impairment of certain other assets |  |  |  |  |  |  |  | 139 | 438
Future minimum lease payments |  |  |  |  |  |  |  |  |
2026 |  |  |  |  |  | 1,233 |  | 3,757 |
2027 |  |  |  |  |  | 1,270 |  | 3,863 |
2028 |  |  |  |  |  | 1,308 |  | 3,973 |
2029 |  |  |  |  |  | 1,348 |  | 4,085 |
2030 |  |  |  |  |  |  |  | 4,200 |
Thereafter |  |  |  |  |  |  |  | 17,421 |
Total undiscounted lease payments |  |  |  |  |  | 7,447 |  | 37,299 |
Less: imputed interest |  |  |  |  |  | (1,692) |  | (13,289) |
Total lease liabilities |  |  |  |  |  | $ 5,755 |  | $ 24,010 |
Employee Severance |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Number of positions eliminated, period percent |  |  |  |  | 55.00% |  |  |  |
Operating leases for office space |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Area leased | ft² |  |  |  |  |  | 37,000 |  | 37,000 |
Option to extend lease |  |  |  |  |  | true |  | true |
Number of extension terms | item |  |  |  |  |  | 2 |  | 2 |
Renewal term of lease |  |  |  |  |  | 5 years |  | 5 years |
Option to terminate lease |  |  |  |  |  | true |  | true |
Notice Period for termination lease |  |  |  |  |  | 15 months |  | 15 months |
Sublease Agreement A |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Area leased | ft² |  |  |  | 8,000 |  |  |  |  |
Option to extend lease |  |  |  | true |  |  |  |  |
Sublease Income |  |  |  | $ 100 |  |  |  |  |
Annual increase in sublease rent (as a percent) |  |  |  | 2.75% |  |  |  |  |
Sublease Agreement B |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Area leased | ft² |  |  | 29,000 |  |  |  |  |  |
Option to extend lease |  |  | true |  |  |  |  |  |
Sublease Income |  |  | $ 900 |  |  |  |  |  |
1835 market street sublease agreement |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Area leased | ft² |  | 16,000 |  |  |  |  |  |  |
Option to extend lease |  | true |  |  |  |  |  |  |
Sublease Income |  | $ 300 |  |  |  |  |  |  |
Term of Contract |  | 18 months |  |  |  |  |  |  |
Operating leases for laboratory space |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Option to terminate lease |  |  |  |  |  |  |  | true |
Notice Period for termination lease |  |  |  |  |  |  |  | 12 months |
Sublease Agreement C |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Area Subleased | ft² | 3,200 |  |  |  |  |  |  |  |
Subleased area of land | 5.00% |  |  |  |  |  |  |  |
Area leased | ft² | 62,000 |  |  |  |  |  |  |  |
Sublease Income | $ 100 |  |  |  |  |  |  |  |
Annual increase in sublease rent (as a percent) | 2.50% |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |  | $ 3,500 | 5,200
Impairment expenses for right of use assets |  |  |  |  |  |  |  | 2,600 | 2,500
Impairment expenses for property and equipment |  |  |  |  |  |  |  |  | 2,300
Impairment of certain other assets |  |  |  |  |  |  |  |  | $ 400
Impairment of leasehold improvements |  |  |  |  |  |  |  | $ 900 |
Maximum | Operating leases for laboratory space |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Number of extension terms | item |  |  |  |  |  | 2 |  | 2 |
Extended term of new lease agreement |  |  |  |  |  | 5 years |  | 5 years |

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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479365/842-20-25-6 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-2 + Details
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