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LEASES | 12 Months Ended
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Dec. 31, 2022
Leases |
Leases | NOTE 7. LEASES We have operating leases and subleases for office space, temporary housing, storage and shops. Our leases have remaining lease terms of less than one year to approximately ten years and most include options to extend the lease term, at our discretion, for an additional six months to ten years. We are not, however, reasonably certain that we will exercise any of the options to extend and as such, they have not been included in the remaining lease terms. Financial and other supplemental information related to our operating leases is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ |  | December 31,
​ |  | Classification |  | 2022 |  | 2021
ROU assets |  | Operating lease ROU assets | ​ | $ | 16,706 | ​ | $ | 17,491
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Lease liabilities |  |  | ​ |  |  | ​ |  |
Current |  | Accrued liabilities | ​ | $ | 3,244 | ​ | $ | 2,940
Noncurrent |  | Operating lease liabilities | ​ |  | 14,861 | ​ |  | 15,940
Total lease liabilities |  |  | ​ | $ | 18,105 | ​ | $ | 18,880
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ | ​ | 2022 | ​ | 2021 | ​ | 2020
Operating lease cost | ​ | $ | 4,041 | ​ | $ | 4,836 | ​ | $ | 4,508
Short-term lease cost | ​ |  | 447 | ​ |  | 169 | ​ |  | 52
Variable lease cost | ​ |  | 1,802 | ​ |  | 2,123 | ​ |  | 1,652
Total lease cost | ​ | $ | 6,290 | ​ | $ | 7,128 | ​ | $ | 6,212
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ | ​ | 2022 | ​ | 2021 | ​ | 2020
Operating cash flows - cash paid for amounts included in the measurement of operating lease liabilities | ​ | $ | 5,951 | ​ | $ | 6,568 | ​ | $ | 5,885
Operating lease ROU assets obtained in exchange for lease liabilities, net (1) | ​ |  | 2,421 | ​ |  | 2,135 | ​ |  | 4,812
(3) | Includes decreases to our ROU assets of $0.2 million and $0.6 million related to lease amendments and terminations during 2022 and 2021, respectively.
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​
​ | ​ | 2022 | ​ | 2021 | ​ | 2020 | ​
Weighted average remaining lease term (in years) | ​ | 6.7 | ​ | 7.2 | ​ | 7.9 | ​
Weighted average discount rate | ​ | 4.7 | % | 4.6 | % | 4.8 | %
​ Remaining maturities of our lease liabilities as of December 31, 2022 are as follows: ​
​ | ​ | ​ | ​
2023 | ​ | $ | 3,719
2024 | ​ | ​ | 3,425
2025 | ​ |  | 2,846
2026 | ​ |  | 2,556
2027 | ​ | ​ | 2,374
Thereafter | ​ |  | 6,486
Total lease payments | ​ |  | 21,406
Less: Interest | ​ |  | (3,301)
Total lease liabilities | ​ | $ | 18,105
​

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI https://asc.fasb.org/subtopic&trid=77888251 + Details
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