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Lease Commitments - Components of Lease Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Lease, Cost [Line Items] |  |  |  |
Operating lease cost: | $ 7,181 | $ 7,385 | $ 14,418 | $ 14,814
Amounts capitalized | (630) | (763) | (1,283) | (1,548)
Total operating lease expense | 6,551 | 6,622 | 13,135 | 13,266
Financing lease cost: |  |  |  |
Amortization of right-of-use assets | 1,583 | 1,262 | 3,095 | 2,430
Interest on lease liabilities | 160 | 141 | 301 | 281
Amounts capitalized | (1,327) | (1,048) | (2,540) | (2,041)
Total financing lease expense | 416 | 355 | 856 | 670
Variable lease expense | 262 | 106 | 367 | 168
Short-term lease expense | 1,147 | 147 | 2,317 | 280
Total lease expense for the period | 8,376 | 7,230 | 16,675 | 14,384
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: | 6,665 | 6,715 | 13,349 | 13,450
Amounts capitalized | (173) | (220) | (358) | (446)
Total operating lease expense | 6,492 | 6,495 | 12,991 | 13,004
Financing lease cost: |  |  |  |
Amortization of right-of-use assets | 769 | 604 | 1,501 | 1,136
Interest on lease liabilities | 79 | 65 | 147 | 127
Amounts capitalized | (563) | (417) | (1,060) | (783)
Total financing lease expense | 285 | 252 | 588 | 480
Variable lease expense | 262 | 106 | 367 | 168
Short-term lease expense | 1,137 | 125 | 2,269 | 249
Total lease expense for the period | 8,176 | 6,978 | 16,215 | 13,901
TNMP |  |  |  |
Lease, Cost [Line Items] |  |  |  |
Operating lease cost: | 495 | 633 | 1,023 | 1,286
Amounts capitalized | (457) | (543) | (926) | (1,102)
Total operating lease expense | 38 | 90 | 97 | 184
Financing lease cost: |  |  |  |
Amortization of right-of-use assets | 799 | 637 | 1,555 | 1,251
Interest on lease liabilities | 80 | 76 | 153 | 152
Amounts capitalized | (764) | (632) | (1,480) | (1,258)
Total financing lease expense | 115 | 81 | 228 | 145
Variable lease expense | 0 | 0 | 0 | 0
Short-term lease expense | 3 | 2 | 3 | 4
Total lease expense for the period | $ 156 | $ 173 | $ 328 | $ 333

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- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 + Details
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