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Leases (Tables)
 9 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Summary of Lease Expense and Supplemental Cash Flow Information
The components of lease expense were as follows:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2021202020212020
Operating lease cost$281 $99 $468 $345 
Operating sublease income(101)(73)(303)(218)
Net operating lease cost$180 $26 $165 $127 
Supplemental cash flow and other information related to leases was as follows:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2021202020212020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$243 $237 $726 $706 
ROU assets obtained in exchange for lease liabilities:
Operating leases$3,061 $— $3,061 $— 
Supplemental Balance Sheet Information
Supplemental balance sheet information related to leases was as follows:
(in thousands)As of September 30,
2021		As of December 31,
2020
Operating lease ROU assets$3,017 $343 
Current operating lease liabilities$594 $860 
Non-current operating lease liabilities2,691 9 
Total operating lease liabilities$3,285 $869 
Weighted-average remaining lease term–operating leases5.3 years1.0 year
Weighted-average discount rate–operating leases7.0 %6.5 %
Summary of Future Minimum Lease Payments
Total remaining annual commitments under non-cancelable lease agreements for each of the years ended December 31 are as follows:
(in thousands)
Year Ending December 31, Operating Leases  Sublease Income  Net Operating Leases
2021 (excluding the nine months ended September 31, 2021)$163 $(101)$62 
2022610 — 610 
2023737 — 737 
2024754 — 754 
2025775 — 775 
Thereafter933 — 933 
Total future minimum lease payments3,972 $(101)$3,871 
Less imputed interest(687)
Total$3,285