v3.20.2

Leases (Tables) | 6 Months Ended
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Jun. 30, 2020
Leases [Abstract] |
Schedule of operating lease information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ | ​ | ​ | 2020 | ​ | ​ | 2019 | ​ | ​ | 2020 | ​ | ​ | 2019
Lease cost: (1) |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​ | ​ | ​
Operating lease cost | ​ | $ | 0.5 | ​ | $ | 0.4 | ​ | $ | 1.1 | ​ | $ | 0.9
Short-term lease cost | ​ | ​ | — | ​ | ​ | 0.3 | ​ | ​ | — | ​ | ​ | 0.9
Sublease income | ​ | ​ | (0.3) | ​ | ​ | (0.3) | ​ | ​ | (0.6) | ​ | ​ | (0.6)
Total lease cost | ​ | $ | 0.2 | ​ | $ | 0.4 | ​ | $ | 0.5 | ​ | $ | 1.2
(1) Finance lease costs are immaterial to the Company
Schedule of other information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Lease | ​ | Income from | ​ | Net lease | ​
​ |  | Payments |  | subleasing |  | payments | ​
2020 | ​ | $ | 1.1 | ​ | $ | (0.6) | ​ | $ | 0.5 | ​
2021 | ​ | ​ | 2.0 | ​ | ​ | (1.1) | ​ | ​ | 0.9 |
2022 | ​ | ​ | 1.7 | ​ | ​ | (1.1) | ​ | ​ | 0.6 | ​
2023 | ​ | ​ | 1.2 | ​ | ​ | (0.7) | ​ | ​ | 0.5 | ​
2024 | ​ | ​ | 0.1 | ​ | ​ | — | ​ | ​ | 0.1 | ​
Thereafter | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​
Total operating lease payments | ​ | $ | 6.1 | ​ | $ | (3.5) | ​ | $ | 2.6 | ​
Less: present value discount | ​ | ​ | (0.2) | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total operating lease liabilities | ​ | $ | 5.9 | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Lease | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Payments |  | ​ | ​ |  | ​ | ​ | ​
2020 | ​ | $ | — | ​ | ​ | ​ | ​ | ​ | ​ | ​
2021 | ​ | ​ | 0.1 | ​ | ​ | ​ | ​ | ​ | ​ |
2022 | ​ | ​ | 0.1 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Thereafter | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total finance lease payments | ​ | $ | 0.2 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Less: amount representing interest | ​ | ​ | (0.1) | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total finance lease liabilities | ​ | $ | 0.1 | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other Information: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash paid for amounts included in the measurement of lease liabilities (1): | ​ | ​ | ​ | ​ | ​ | ​ | ​
Operating cash flows from operating leases | ​ | $ | 0.5 | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average remaining lease term (in years): | ​
Operating leases | ​ | ​ | 3.1 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Finance leases | ​ | ​ | 1.9 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average discount rate - operating leases | ​ | ​ | 3.91 | % | ​ | ​ | ​ | ​ | ​ | ​
Weighted average discount rate - finance leases | ​ | ​ | 4.08 | % | ​ | ​ | ​ | ​ | ​ | ​
(1) Cash flows from finance leases are immaterial to the Company
Schedule of rental income from operating leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Rental Income from operating leases | ​ | Rental Income from operating leases | ​
​ | Three Months Ended | ​ | Six Months Ended | ​
​ | June 30, | ​ | June 30, | ​
​ | 2020 | ​ | 2019 | ​ | 2020 | ​ | 2019 | ​
Solid Fuel | $ | 15.2 | ​ | $ | 18.6 | ​ | $ | 32.0 | ​ | $ | 38.3 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Natural Gas | ​ | 6.1 | ​ | ​ | 5.8 | ​ | ​ | 12.0 | ​ | ​ | 11.9 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Hydroelectric | ​ | 17.9 | ​ | ​ | 22.5 | ​ | ​ | 36.2 | ​ | ​ | 41.0 | ​
​ | $ | 39.2 | ​ | $ | 46.9 | ​ | $ | 80.2 | ​ | $ | 91.2 | ​

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