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LEASE LIABILITIES (Tables) | 12 Months Ended
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Dec. 31, 2019
LEASE LIABILITIES |
Schedule of lease liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Total discounted lease liabilities
​ | ​ | December 31, 2019 | ​ | December 31, 2018
Finance leases | ​ | $ | 6,229 | ​ | $ | 6,429
Operating lease | ​ | ​ | 904 | ​ | ​ | —
Lease liabilities | ​ | $ | 7,133 | ​ | $ | 6,429
Current portion | ​ | ​ | (2,115) | ​ | ​ | (1,511)
Long-term portion | ​ | $ | 5,018 | ​ | $ | 4,918
Schedule of lease costs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Year ended December 31,
​ | ​ | ​ | ​ | ​ | ​ | 2019
Finance leases: | ​ | ​ | ​ | ​ | ​ | ​
Amortization of ROU assets | ​ | ​ | ​ | ​ | $ | 1,123
Interest expense | ​ | ​ | ​ | ​ | ​ | 517
Total | ​ | ​ | ​ | ​ | $ | 1,640
​ | ​ | ​ | ​ | ​ | ​ | ​
Operating lease: | ​ | ​ | ​ | ​ | ​ | ​
Rent expense | ​ | ​ | ​ | ​ | $ | 193
Schedule of undiscounted lease payment obligations, operating lease | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Payments due by period
​ |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | Total
Operating lease obligation | ​ | $ | 226 | ​ | $ | 230 | ​ | $ | 232 | ​ | $ | 237 | ​ | $ | 158 | ​ | $ | 1,083
Finance lease obligations | ​ |  | 2,340 | ​ |  | 2,385 | ​ |  | 2,081 | ​ |  | 105 | ​ |  | — | ​ |  | 6,911
Total future minimum lease payments | ​ | $ | 2,566 | ​ | $ | 2,615 | ​ | $ | 2,313 | ​ | $ | 342 | ​ | $ | 158 | ​ | $ | 7,994
Less: Imputed interest | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | (861)
Total | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 7,133

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- Definition Tabular disclosure of lease liabilities. + References No definition available. + 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=77888426&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=77888426&loc=SL77918701-209980 + Details
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