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Lease Commitments - Components of Lease Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Lease, Cost [Line Items] |  |  |  |
Operating lease cost: | $ 2,869 | $ 7,181 | $ 7,206 | $ 14,418
Amounts capitalized | (434) | (630) | (947) | (1,283)
Total operating lease expense | 2,435 | 6,551 | 6,259 | 13,135
Financing lease cost: |  |  |  |
Amortization of right-of-use assets | 2,235 | 1,583 | 4,329 | 3,095
Interest on lease liabilities | 252 | 160 | 486 | 301
Amounts capitalized | (1,477) | (1,327) | (3,167) | (2,540)
Total financing lease expense | 1,010 | 416 | 1,648 | 856
Variable lease expense | 360 | 262 | 622 | 367
Short-term lease expense | 149 | 1,147 | 299 | 2,317
Total lease expense for the period | 3,954 | 8,376 | 8,828 | 16,675
Cooling Towers |  |  |  |
Financing lease cost: |  |  |  |
Short-term lease expense |  | 1,100 |  | 2,300
Increase reimbursements |  | 1,100 |  | 2,300
PNM |  |  |  |
Lease, Cost [Line Items] |  |  |  |
Operating lease cost: | 2,468 | 6,665 | 6,376 | 13,349
Amounts capitalized | (103) | (173) | (263) | (358)
Total operating lease expense | 2,365 | 6,492 | 6,113 | 12,991
Financing lease cost: |  |  |  |
Amortization of right-of-use assets | 1,123 | 769 | 2,132 | 1,501
Interest on lease liabilities | 140 | 79 | 262 | 147
Amounts capitalized | (778) | (563) | (1,469) | (1,060)
Total financing lease expense | 485 | 285 | 925 | 588
Variable lease expense | 360 | 262 | 622 | 367
Short-term lease expense | 145 | 1,137 | 292 | 2,269
Total lease expense for the period | 3,355 | 8,176 | 7,952 | 16,215
TNMP |  |  |  |
Lease, Cost [Line Items] |  |  |  |
Operating lease cost: | 401 | 495 | 830 | 1,023
Amounts capitalized | (331) | (457) | (684) | (926)
Total operating lease expense | 70 | 38 | 146 | 97
Financing lease cost: |  |  |  |
Amortization of right-of-use assets | 1,098 | 799 | 2,162 | 1,555
Interest on lease liabilities | 112 | 80 | 223 | 153
Amounts capitalized | (699) | (764) | (1,699) | (1,480)
Total financing lease expense | 511 | 115 | 686 | 228
Variable lease expense | 0 | 0 | 0 | 0
Short-term lease expense | 1 | 3 | 1 | 3
Total lease expense for the period | $ 582 | $ 156 | $ 833 | $ 328

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- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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