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Leases (Tables)
 3 Months Ended
Mar. 31, 2021
Leases [Abstract]  
Components of Lease Expense The components of lease expense are as follows:
Three months ended March 31,
20212020
Operating lease cost$136 $158 
Finance lease cost:
        Amortization of right-of-use assets4 4
        Interest on lease liabilities1 1
Total finance lease cost$5 $5 
Summary of Supplemental Balance Sheet Information Supplemental balance sheet information related to leases as of the periods presented are as follows:
March 31, 2021December 31, 2020
Operating Leases
Other assets$1,919 $2,001 
Capital lease obligation, current420 422 
Other long-term liabilities1,658 1,761 
Total operating lease liabilities2,078 2,183 
Finance Leases
Property, plant, and equipment81 81 
Accumulated depreciation(32)(25)
Property, plant, and equipment, net49 56 
Capital lease obligation, current14 14 
Other long-term liabilities39 43 
Total finance lease liabilities$53 $57 
Schedule of Finance Lease Liabilities by Maturity
As of March 31, 2021, maturities of lease liabilities are as follows:
Operating Financing
Year Ending March 31, LeasesLeases
2021 (excluding the three months ended March 31, 2021)444 13 
2022552 18 
2023551 18 
2024238 12 
2025210 — 
2026210 — 
Thereafter432 — 
Total lease payments2,637 62 
Less imputed interest559 9 
Total $2,078 $53 
Summary of Operating Leases by Maturity
As of March 31, 2021, maturities of lease liabilities are as follows:
Operating Financing
Year Ending March 31, LeasesLeases
2021 (excluding the three months ended March 31, 2021)444 13 
2022552 18 
2023551 18 
2024238 12 
2025210 — 
2026210 — 
Thereafter432 — 
Total lease payments2,637 62 
Less imputed interest559 9 
Total $2,078 $53