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Leases | 3 Months Ended
--- | ---
Mar. 31, 2022
Lessee Disclosure [Abstract] |
Leases |
8. | Leases
We have operating lease agreements for laboratory, office and warehouse facilities in Seattle, Washington, Bothell, Washington, South San Francisco, California and New York City, New York. As of March 31, 2022, we were not party to any finance leases. The following table reconciles our undiscounted operating lease cash flows to our operating lease liabilities, less current portion balance as of March 31, 2022 (in thousands):
2022 (excluding the three months ended March 31, 2022) |  | $ | 10,618 |
2023 |  |  | 13,964 |
2024 |  |  | 13,692 |
2025 |  |  | 14,098 |
2026 |  |  | 12,330 |
Thereafter |  |  | 81,188 |
Total undiscounted lease payments |  |  | 145,890 |
Less: |  |  |  |
Imputed interest rate |  |  | (31,087 | )
Tenant improvement receivables |  |  | (1,280 | )
Total operating lease liabilities |  |  | 113,523 |
Less: Current portion |  |  | (8,545 | )
Operating lease liabilities, less current portion |  | $ | 104,978 |
Cash paid for amounts included in the measurement of lease liabilities was $3.3 million and cash received for tenant improvement allowances was $4.0 million during the three months ended March 31, 2022. During the three months ended March 31, 2021, cash paid for amounts included in the measurement of lease liabilities was $0.5 million, net of $1.2 million of cash received for tenant improvement allowances. We previously entered into a $2.1 million letter of credit with one of our financial institutions in connection with one of our leases.

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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