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Leases (Tables)
 3 Months Ended
Mar. 31, 2021
Leases [Abstract]  
Summary of Lease Expense and Supplemental Cash Flow Information The components of lease expense were as follows:
Three Months Ended March 31,
(in thousands)20212020
Operating lease cost$95 $107 
Operating sublease income(101)(73)
Net operating lease cost$(6)$34 
Supplemental cash flow and other information related to leases was as follows:
Three Months Ended March 31,
(in thousands)20212020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$240 $233 
Supplemental Balance Sheet Information
Supplemental balance sheet information related to leases was as follows:
(in thousands)As of March 31,
2021		As of December 31,
2020
Operating lease ROU assets$261 $343 
Current operating lease liabilities$635 $860 
Non-current operating lease liabilities8 9 
Total operating lease liabilities$643 $869 
Weighted-average remaining lease term–operating leases0.8 years1.0 year
Weighted-average discount rate–operating leases6.5 %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 three months ended March 31, 2021)$650 $(303)$347 
20226 — 6 
20233 — 3 
Total future minimum lease payments659 $(303)$356 
Less imputed interest(16)
Total$643