XML 40 R29.htm IDEA: XBRL DOCUMENT
v3.24.3

Select Balance Sheet Information (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Receivables | Receivables as of September 30, 2024 and December 31, 2023 are as follows:
(in thousands) | September 30, 2024 |  | December 31, 2023
Receivables |  |  |
Trade | $ | 160,476 |  |  | $ | 129,257 |
Other | 8,862 |  |  | 9,084 |
Unbilled Receivables | 18,885 |  |  | 21,324 |
Total Receivables | 188,223 |  |  | 159,665 |
Less: Allowance for Credit Losses | 1,950 |  |  | 2,522 |
Receivables, net of allowance for credit losses | $ | 186,273 |  |  | $ | 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 nine months ended September 30, 2024 and 2023:
(in thousands) | 2024 |  | 2023
Beginning Balance, January 1 | $ | 2,522 |  |  | $ | 1,648 |
Additions Charged to Expense | 904 |  |  | 1,176 |
Reductions for Amounts Written Off, Net of Recoveries | (1,476) |  |  | (837) |
Ending Balance, September 30 | $ | 1,950 |  |  | $ | 1,987 |
Schedule of Inventories | Inventories consist of the following as of September 30, 2024 and December 31, 2023:
(in thousands) | September 30, 2024 |  | December 31, 2023
Raw Material, Fuel and Supplies | $ | 83,668 |  |  | $ | 75,733 |
Work in Process | 24,904 |  |  | 26,354 |
Finished Goods | 44,661 |  |  | 47,614 |
Total Inventories | $ | 153,233 |  |  | $ | 149,701 |
Schedule of Investments | The following is a summary of our investments as of September 30, 2024 and December 31, 2023:
(in thousands) | September 30, 2024 |  | December 31, 2023
Short-term Investments |  |  |
Government Debt Securities | $ | 616 |  |  | $ | — |
Total Short-term Investments | 616 |  |  | — |
Long-term Investments |  |  |
Corporate-Owned Life Insurance Policies | 46,585 |  |  | 42,287 |
Government Debt Securities | 60,776 |  |  | 7,724 |
Corporate Debt Securities | 1,644 |  |  | 1,579 |
Money Market Funds | 1,118 |  |  | 3,125 |
Mutual Funds | 11,271 |  |  | 7,771 |
Other Investments | 27 |  |  | 30 |
Total Long-term Investments | 121,421 |  |  | 62,516 |
Total Investments | $ | 122,037 |  |  | $ | 62,516 |
Schedule of Amortized Costs and Fair Value of Debt Securities, Available-for-Sale | The following table summarizes the amortized cost and fair value of debt securities available-for-sale and the corresponding amounts of gross unrealized gains and losses as of September 30, 2024:
| September 30, 2024
(in thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized (Losses) |  | Fair Value
Government Debt Securities | $ | 60,399 |  |  | $ | 1,151 |  |  | $ | (158) |  |  | $ | 61,392 |
Corporate Debt Securities | 1,621 |  |  | 25 |  |  | (2) |  |  | 1,644 |
Total | $ | 62,020 |  |  | $ | 1,176 |  |  | $ | (160) |  |  | $ | 63,036 |
Schedule of Property, Plant and Equipment | Major classes of property, plant and equipment as of September 30, 2024 and December 31, 2023 include:
(in thousands) | September 30, 2024 |  | December 31, 2023
Electric Plant |  |  |
Electric Plant in Service | $ | 3,087,286 |  |  | $ | 2,989,881 |
Construction Work in Progress | 231,429 |  |  | 137,212 |
Total Gross Electric Plant | 3,318,715 |  |  | 3,127,093 |
Less Accumulated Depreciation and Amortization | 885,075 |  |  | 851,148 |
Net Electric Plant | 2,433,640 |  |  | 2,275,945 |
Nonelectric Property, Plant and Equipment |  |  |
Nonelectric Property, Plant and Equipment in Service | 329,126 |  |  | 311,924 |
Construction Work in Progress | 62,581 |  |  | 38,062 |
Total Gross Nonelectric Property, Plant and Equipment | 391,707 |  |  | 349,986 |
Less Accumulated Depreciation and Amortization | 220,478 |  |  | 207,556 |
Net Nonelectric Property, Plant and Equipment | 171,229 |  |  | 142,430 |
Net Property, Plant and Equipment | $ | 2,604,869 |  |  | $ | 2,418,375 |

X
- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_AccountsReceivableAllowanceForCreditLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 321 -Publisher FASB -URI https://asc.fasb.org/321/tableOfContent Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 325 -Publisher FASB -URI https://asc.fasb.org/325/tableOfContent + Details
Name: | us-gaap_InvestmentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483489/210-10-50-1 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration