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Leases (Tables)
 6 Months Ended
Jun. 30, 2021
Leases [Abstract]  
Summary of Lease Expense and Supplemental Cash Flow Information The components of lease expense were as follows:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2021202020212020
Operating lease cost$92 $139 $187 $246 
Operating sublease income(101)(73)(202)(146)
Net operating lease cost$(9)$66 $(15)$100 
Supplemental cash flow and other information related to leases was as follows:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2021202020212020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$243 $236 $483 $469 
Supplemental Balance Sheet Information
Supplemental balance sheet information related to leases was as follows:
(in thousands)As of June 30,
2021		As of December 31,
2020
Operating lease ROU assets$178 $343 
Current operating lease liabilities$402 $860 
Non-current operating lease liabilities6 9 
Total operating lease liabilities$408 $869 
Weighted-average remaining lease term–operating leases0.5 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 six months ended June 30, 2021)$406 $(202)$204 
20226 — 6 
20233 — 3 
Total future minimum lease payments415 $(202)$213 
Less imputed interest(7)
Total$408