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Lease Commitments - Operating Lease Balance Sheet Information (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
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Operating leases: |  |
Operating lease assets, net of amortization | $ 124,717 | $ 131,212
Current portion of operating lease liabilities | 29,693 | 29,068
Long-term portion of operating lease liabilities | 95,573 | 105,512
PNM |  |
Operating leases: |  |
Operating lease assets, net of amortization | 114,829 | 120,585
Current portion of operating lease liabilities | 26,727 | 25,927
Long-term portion of operating lease liabilities | 88,686 | 97,992
TNMP |  |
Operating leases: |  |
Operating lease assets, net of amortization | 9,271 | 9,954
Current portion of operating lease liabilities | 2,624 | 2,753
Long-term portion of operating lease liabilities | $ 6,459 | $ 7,039

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- Definition Operating Lease, Assets and Liabilities, Lessee [Abstract] + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Details
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