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Leases (Tables) | 12 Months Ended
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Dec. 31, 2023
Leases |
Schedule of operating lease right-of-use assets and lease obligations | Operating lease right-of-use assets and lease obligations included in the consolidated balance sheets at December 31, are as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | 2023 | ​ | ​ | 2022
​ | Right-of-use assets under operating leases: | ​ | ​ | ​ | ​ | ​
​ | Other assets - noncurrent | $ | 127,499 | ​ | $ | 110,638
​ | Lease obligations under operating leases: | ​ | ​ | ​ | ​ | ​
​ | Accrued liabilities | $ | 21,003 | ​ | $ | 18,850
​ | Other liabilities - noncurrent | ​ | 107,147 | ​ | ​ | 91,793
​ | ​ | $ | 128,150 | ​ | $ | 110,643
Schedule of future operating lease liabilities | Future operating lease liabilities as of December 31, 2023, for the next five years and thereafter are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2024 | $ | 25,609 | ​ | ​
​ | ​ | 2025 | ​ | 21,599 | ​ | ​
​ | ​ | 2026 | ​ | 17,129 | ​ | ​
​ | ​ | 2027 | ​ | 15,055 | ​ | ​
​ | ​ | 2028 | ​ | 12,416 | ​ | ​
​ | ​ | Thereafter | ​ | 62,302 | ​ | ​
​ | ​ | Total undiscounted cash flows | ​ | 154,110 | ​ | ​
​ | ​ | Less imputed interest | ​ | (25,960) | ​ | ​
​ | ​ | Lease obligations under operating leases | $ | 128,150 | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​

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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 -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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