Lease Commitments - Schedule of Future Expected Lease Payments (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Financing
2024	$ 9,746
2025	7,598
2026	5,870
2027	3,240
2028	1,199
Later years	651
Total minimum lease payments	28,304
Less: Imputed interest	2,202
Lease liabilities	26,102
Battery Storage
Other
2024	11,786
2025	11,786
2026	11,786
2027	11,786
2028	11,786
Later years	172,254
Total minimum lease payments	231,184
Less: Imputed interest	94,563
Lease liabilities	136,621
Other
Other
2024	8,991
2025	7,857
2026	7,101
2027	7,029
2028	7,032
Later years	10,587
Total minimum lease payments	48,597
Less: Imputed interest	5,951
Lease liabilities	42,646
PNM
Financing
2024	4,649
2025	3,605
2026	3,089
2027	1,859
2028	889
Later years	614
Total minimum lease payments	14,705
Less: Imputed interest	1,259
Lease liabilities	13,446
PNM | Battery Storage
Other
2024	11,786
2025	11,786
2026	11,786
2027	11,786
2028	11,786
Later years	172,254
Total minimum lease payments	231,184
Less: Imputed interest	94,563
Lease liabilities	136,621
PNM | Other
Other
2024	8,046
2025	7,087
2026	7,025
2027	7,029
2028	7,032
Later years	10,587
Total minimum lease payments	46,806
Less: Imputed interest	5,865
Lease liabilities	40,941
TNMP
Financing
2024	5,083
2025	3,991
2026	2,781
2027	1,381
2028	310
Later years	37
Total minimum lease payments	13,583
Less: Imputed interest	944
Lease liabilities	12,639
Other
2024	945
2025	770
2026	76
2027	0
2028	0
Later years	0
Total minimum lease payments	1,791
Less: Imputed interest	87
Lease liabilities	$ 1,704