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Leases (Tables)
 6 Months Ended
Jun. 30, 2021
Leases [Abstract]  
Components of Lease Expense The components of lease expense are as follows:
Three months ended June 30,Six months ended June 30,
Dollars in thousands2021202020212020
Operating lease cost$129 $158 $265 $316 
Finance lease cost:
        Amortization of right-of-use assets3 4 7 7
        Interest on lease liabilities1 1 2 3
Total finance lease cost$4 $5 $9 $10 
Summary of Supplemental Balance Sheet Information Supplemental balance sheet information related to leases as of the periods presented are as follows:
Dollars in thousandsJune 30, 2021December 31, 2020
Operating Leases
Other assets$1,832 $2,001 
Capital lease obligation, current453 422 
Other long-term liabilities1,512 1,761 
Total operating lease liabilities1,965 2,183 
Finance Leases
Property, plant and equipment82 81 
Accumulated depreciation(36)(25)
Property, plant and equipment, net46 56 
Capital lease obligation, current14 14 
Other long-term liabilities36 43 
Total finance lease liabilities$50 $57 
Schedule of Finance Lease Liabilities by Maturity As of June 30, 2021, maturities of lease liabilities are as follows (in thousands):
Operating Financing
LeasesLeases
2021$277 $9 
2022553 18 
2023552 18 
2024239 12 
2025211 — 
2026211 — 
Thereafter435 — 
Total lease payments2,478 57 
Less imputed interest513 7 
Total $1,965 $50 
Summary of Operating Leases by Maturity As of June 30, 2021, maturities of lease liabilities are as follows (in thousands):
Operating Financing
LeasesLeases
2021$277 $9 
2022553 18 
2023552 18 
2024239 12 
2025211 — 
2026211 — 
Thereafter435 — 
Total lease payments2,478 57 
Less imputed interest513 7 
Total $1,965 $50