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Leases (Tables) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Schedule of lease expense, payments for operating leases, and information related to lease term and discount rates | Our expenses and payments for operating leases were as follows:
| Year Ended December 31,
(Dollars in thousands) | 2020 |  | 2019 |  | 2018
Operating leases expense | $ | 3,257 |  |  | $ | 3,119 |  |  | $ | 3,850 |
Short-term leases expense | $ | 464 |  |  | $ | 192 |  |  | $ | 112 |
Payments on operating lease obligations | $ | 2,893 |  |  | $ | 2,967 |  |  | $ | 3,850 |
The following table includes information regarding the lease term and discount rates utilized in the calculation of the present value of net future minimum lease payments:
| Finance Leases |  | Operating Leases
Weighted Average Remaining Lease Term | 0.8 years |  | 2.5 years
Weighted Average Discount Rate | 3.07% |  | 4.57%
Schedule of assets and liabilities balance related to finance and operating leases | Our assets and liabilities balances related to finance and operating leases reflected in the consolidated statements of financial position, were as follows:
|  | As of December 31,
(Dollars in thousands) | Financial Statement Line Item | 2020 |  | 2019
Finance lease right-of-use assets | Property, plant and equipment, net | $ | 7,017 |  |  | $ | 6,280 |
Operating lease right-of-use assets | Other long-term assets | $ | 4,216 |  |  | $ | 4,656 |
Finance lease obligations, current portion | Other accrued liabilities | $ | 4,755 |  |  | $ | 400 |
Finance lease obligations, non-current portion | Other long-term liabilities | $ | 322 |  |  | $ | 4,140 |
Total finance lease obligations |  | $ | 5,077 |  |  | $ | 4,540 |
Operating lease obligations, current portion | Other accrued liabilities | $ | 2,275 |  |  | $ | 2,343 |
Operating lease obligations, non-current portion | Other long-term liabilities | $ | 2,219 |  |  | $ | 2,334 |
Total operating lease obligations |  | $ | 4,494 |  |  | $ | 4,677 |
Schedule of finance lease liability maturity | The following table includes future minimum lease payments under finance and operating leases together with the present value of the net future minimum lease payments as of December 31, 2020:
| Finance | Operating
(Dollars in thousands) | Leases in Effect |  |  |  | Leases Signed |  | Less: Leases Not Yet Commenced |  | Leases in Effect
2021 | 4,787 |  |  |  |  | 2,435 |  |  | (93) |  |  | 2,342 |
2022 | 194 |  |  |  |  | 1,513 |  |  | (101) |  |  | 1,412 |
2023 | 187 |  |  |  |  | 788 |  |  | (65) |  |  | 723 |
2024 | — |  |  |  |  | 299 |  |  | (40) |  |  | 259 |
Thereafter | — |  |  |  |  | 42 |  |  | (37) |  |  | 5 |
Total lease payments | 5,168 |  |  |  |  | 5,077 |  |  | (336) |  |  | 4,741 |
Less: Interest | (91) |  |  |  |  | (259) |  |  | 12 |  |  | (247) |
Present Value of Net Future Minimum Lease Payments | $ | 5,077 |  |  |  |  | $ | 4,818 |  |  | $ | (324) |  |  | $ | 4,494 |
Schedule of operating lease liability maturity | The following table includes future minimum lease payments under finance and operating leases together with the present value of the net future minimum lease payments as of December 31, 2020:
| Finance | Operating
(Dollars in thousands) | Leases in Effect |  |  |  | Leases Signed |  | Less: Leases Not Yet Commenced |  | Leases in Effect
2021 | 4,787 |  |  |  |  | 2,435 |  |  | (93) |  |  | 2,342 |
2022 | 194 |  |  |  |  | 1,513 |  |  | (101) |  |  | 1,412 |
2023 | 187 |  |  |  |  | 788 |  |  | (65) |  |  | 723 |
2024 | — |  |  |  |  | 299 |  |  | (40) |  |  | 259 |
Thereafter | — |  |  |  |  | 42 |  |  | (37) |  |  | 5 |
Total lease payments | 5,168 |  |  |  |  | 5,077 |  |  | (336) |  |  | 4,741 |
Less: Interest | (91) |  |  |  |  | (259) |  |  | 12 |  |  | (247) |
Present Value of Net Future Minimum Lease Payments | $ | 5,077 |  |  |  |  | $ | 4,818 |  |  | $ | (324) |  |  | $ | 4,494 |

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- Definition Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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