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Leases (Tables)
 12 Months Ended
Dec. 31, 2020
Lessee Disclosure [Abstract]  
Lease, Cost
Lease expense for the year ended December 31 were as follows (in thousands):
Income Statement Location20202019
Operating lease costOperations and maintenance$978 $1,456 
Lessee Supplemental Balance Sheet Information
Supplemental balance sheet information related to leases as of December 31 was as follows (in thousands):
Balance Sheet Location20202019
Assets:
Operating lease assetsOther assets, non-current$4,188 $4,629 
Total lease assets$4,188 $4,629 
Liabilities:
Current:
Operating leasesAccrued liabilities$736 $1,179 
Noncurrent:
Operating leasesOther deferred credits and other liabilities3,807 3,821 
Total lease liabilities$4,543 $5,000 
Lessee Supplemental Cash Flow Information
Supplemental cash flow information related to leases for the year ended December 31 was as follows (in thousands):
20202019
Cash paid included in the measurement of lease liabilities:
Operating cash flows from operating leases$1,023 $1,263 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases$161 $2,801 
Lessee Supplemental Weighted Average Schedule
Weighted average remaining terms and discount rates related to leases as of December 31 were as follows:
20202019
Weighted average remaining lease term:
Operating leases8 years8 years
Weighted average discount rate:
Operating leases4.24 %4.27 %
Finance Lease, Liability, Maturity
As of December 31, 2020, scheduled maturities of lease liabilities for future years were as follows (in thousands):
Operating Leases
2021$907 
2022804 
2023779 
2024776 
2025529 
Thereafter1,643 
Total lease payments$5,438 
Less imputed interest895 
Present value of lease liabilities$4,543 
Lessor Disclosure [Abstract]  
Operating Lease, Lease Income
Lease revenue for the year ended December 31 were as follows (in thousands):
Income Statement Location20202019
Operating lease incomeRevenue$2,534 $2,306 
Lessor - Operating And Finance Lease, Liability, Maturity
As of December 31, 2020, scheduled maturities of operating lease payments to be received in future years were as follows (in thousands):
Operating Leases
2021$2,383 
20222,122 
20232,130 
20242,074 
20252,090 
Thereafter58,829 
Total lease receivables$69,628