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Lease Agreements (Tables) | 9 Months Ended
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Sep. 30, 2020
Lease Agreements |
Schedule of maturity of operating lease liabilities | The following table summarizes maturity of the Company’s operating lease liabilities as of September 30, 2020 (in thousands): ​
​ | ​ | ​ | ​
​ | ​ | Operating
Undiscounted lease payments |  | Leases
2020 (excluding nine months ended September 30, 2020) | ​ | $ | 47
2021 | ​ |  | 196
2022 | ​ |  | 202
2023 | ​ |  | 35
Thereafter | ​ |  | —
Total undiscounted lease payments | ​ |  | 480
Present value adjustment | ​ |  | (30)
Total net lease liabilities |  | $ | 450
Schedule of cost components of operating leases | The following table summarizes the cost components of the Company’s operating leases for the three and nine months ended September 30, 2020 and 2019 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ | 2020 | ​ | 2019 |  | 2020 |  | 2019
Lease costs: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Operating lease cost | $ | 44 | ​ | $ | 595 |  | $ | 133 |  | $ | 1,805
Variable lease cost (1) |  | 2 | ​ |  | 375 |  | ​ | 5 |  | ​ | 1,346
Total lease costs | $ | 46 | ​ | $ | 970 |  | $ | 138 | ​ | $ | 3,151
| (1) | Under the terms of the lease agreements, the Company is also responsible for certain variable lease payments that are not included in the measurement of the lease liability. Variable lease payments include non-lease components such as common area maintenance fees.
Summary of supplemental cash flow information related to operating leases | The following information represents supplemental disclosure for the statement of cash flows related to operating leases (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​
​ | Nine Months Ended September 30,
​ | 2020 | ​ | 2019
Cash paid for amounts included in the measurement of lease liabilities |  | ​ | ​ |  | ​
Operating cash flows under operating leases | $ | 141 | ​ | $ | 1,975
Schedule of present value assumptions used in calculating the present value of lease payments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2020 | ​ | 2019
Weighted-average remaining lease term | ​ | ​ | ​ | ​ | ​ | ​
Operating leases | ​ | 2.42 years | ​ | ​ | 3.17 years | ​
Weighted-average discount rate | ​ | ​ | ​ | ​ | ​ | ​
Operating leases | ​ | 5.51 | % | ​ | 5.51 | %

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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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- Definition The tabular disclosure of supplemental cash flows information related to leases. + References No definition available. + Details
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- Definition The tabular disclosure of supplemental information related to operating leases. May include, but not limited to, present value assumptions used in calculating the present value of the lease payments. + References No definition available. + Details
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