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Lease Commitments - Operating and financing leases - (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Lease Commitments |  |
Operating lease, Within 1 year | $ 119 | $ 118
Operating lease, After 1 year but within 2 years | 110 | 120
Operating lease, After 2 years but within 3 years | 69 | 98
Operating lease, After 3 years but within 4 years | 69 | 69
Operating lease, After 4 years but within 5 years | 69 | 69
Operating lease, After 5 years | 539 | 589
Total undiscounted cash flows | 975 | 1,063
Discount on cash flows | (177) | (198)
Total lease liabilities | 798 | 865
Financing lease, Within 1 year | 316 | 296
Financing lease, After 1 year but within 2 years | 319 | 275
Financing lease, After 2 years but within 3 years | 320 | 277
Financing lease, After 3 years but within 4 years | 253 | 274
Financing lease, After 4 years but within 5 years | 252 | 236
Financing lease, After 5 years | 2,821 | 3,007
Total undiscounted cash flows | 4,281 | 4,365
Discount on cash flows | (1,120) | (1,202)
Total lease liabilities | $ 3,161 | $ 3,163

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