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Select Balance Sheet Information (Tables) | 6 Months Ended
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Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Receivables | Receivables as of June 30, 2024 and December 31, 2023 are as follows:
(in thousands) | June 30, 2024 |  | December 31, 2023
Receivables |  |  |
Trade | $ | 164,098 |  |  | $ | 129,257 |
Other | 9,725 |  |  | 9,084 |
Unbilled Receivables | 20,149 |  |  | 21,324 |
Total Receivables | 193,972 |  |  | 159,665 |
Less: Allowance for Credit Losses | 2,026 |  |  | 2,522 |
Receivables, net of allowance for credit losses | $ | 191,946 |  |  | $ | 157,143 |
Schedule of Activity in Allowance for Credit Losses | The following is a summary of activity in the allowance for credit losses for the six months ended June 30, 2024 and 2023:
(in thousands) | 2024 |  | 2023
Beginning Balance, January 1 | $ | 2,522 |  |  | $ | 1,648 |
Additions Charged to Expense | 471 |  |  | 1,001 |
Reductions for Amounts Written Off, Net of Recoveries | (967) |  |  | (435) |
Ending Balance, June 30 | $ | 2,026 |  |  | $ | 2,214 |
Schedule of Inventories | Inventories consist of the following as of June 30, 2024 and December 31, 2023:
(in thousands) | June 30, 2024 |  | December 31, 2023
Raw Material, Fuel and Supplies | $ | 85,795 |  |  | $ | 75,733 |
Work in Process | 27,435 |  |  | 26,354 |
Finished Goods | 48,557 |  |  | 47,614 |
Total Inventories | $ | 161,787 |  |  | $ | 149,701 |
Schedule of Investments | The following is a summary of our investments as of June 30, 2024 and December 31, 2023:
(in thousands) | June 30, 2024 |  | December 31, 2023
Short-term Investments |  |  |
Government Debt Securities | $ | 469 |  |  | $ | — |
Corporate Debt Securities | 590 |  |  | — |
Total Short-term Investments | $ | 1,059 |  |  | $ | — |
Long-term Investments |  |  |
Corporate-Owned Life Insurance Policies | $ | 44,534 |  |  | $ | 42,287 |
Government Debt Securities | 58,749 |  |  | 7,724 |
Corporate Debt Securities | 1,025 |  |  | 1,579 |
Money Market Funds | 2,606 |  |  | 3,125 |
Mutual Funds | 10,121 |  |  | 7,771 |
Other Investments | 27 |  |  | 30 |
Total Long-term Investments | 117,062 |  |  | 62,516 |
Total Investments | $ | 118,121 |  |  | $ | 62,516 |
Schedule of Property, Plant and Equipment | Major classes of property, plant and equipment as of June 30, 2024 and December 31, 2023 include:
(in thousands) | June 30, 2024 |  | December 31, 2023
Electric Plant |  |  |
Electric Plant in Service | $ | 3,055,265 |  |  | $ | 2,989,881 |
Construction Work in Progress | 199,338 |  |  | 137,212 |
Total Gross Electric Plant | 3,254,603 |  |  | 3,127,093 |
Less Accumulated Depreciation and Amortization | 879,268 |  |  | 851,148 |
Net Electric Plant | 2,375,335 |  |  | 2,275,945 |
Nonelectric Property, Plant and Equipment |  |  |
Nonelectric Property, Plant and Equipment in Service | 325,067 |  |  | 311,924 |
Construction Work in Progress | 54,054 |  |  | 38,062 |
Total Gross Nonelectric Property, Plant and Equipment | 379,121 |  |  | 349,986 |
Less Accumulated Depreciation and Amortization | 215,615 |  |  | 207,556 |
Net Nonelectric Property, Plant and Equipment | 163,506 |  |  | 142,430 |
Net Property, Plant and Equipment | $ | 2,538,841 |  |  | $ | 2,418,375 |

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