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Condensed Consolidated Balance Sheets - TXNM (Parenthetical) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Allowance for uncollectible accounts | $ 3,046 | $ 3,388
Accumulated depreciation, nuclear fuel | 36,439 | 35,840
Current installments of long-term debt (includes $6,907 and $2,529 related to ETBC I) | 411,539 | 280,169
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs (includes $331,699 and $338,521 related to ETBC I) | $ 4,511,206 | $ 4,241,642
Cumulative preferred stock of subsidiary, stated value (in dollars per share) | $ 100 | $ 100
Cumulative preferred stock of subsidiary, shares authorized (in shares) | 10,000,000 | 10,000,000
Cumulative preferred stock of subsidiary, shares issued (in shares) | 115,293 | 115,293
Cumulative preferred stock of subsidiary, shares outstanding (in shares) | 115,293 | 115,293
Common stock, no par value (in dollars per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 200,000,000 | 120,000,000
Common stock, shares issued (in shares) | 90,200,384 | 90,200,384
Common stock, shares outstanding (in shares) | 90,200,384 | 90,200,384
ETBC 1 |  |
Current installments of long-term debt (includes $6,907 and $2,529 related to ETBC I) | $ 6,907 | $ 2,529
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs (includes $331,699 and $338,521 related to ETBC I) | $ 331,699 | $ 338,521

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