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Select Balance Sheet Information | 6 Months Ended
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Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Select Balance Sheet Information | Select Balance Sheet Information Receivables and Allowance for Credit Losses Receivables as of June 30, 2022 and December 31, 2021 are as follows:
(in thousands) | June 30, 2022 |  | December 31, 2021
Receivables |  |  |
Trade | $ | 200,682 |  |  | $ | 142,297 |
Other | 7,143 |  |  | 10,591 |
Unbilled Receivables | 19,770 |  |  | 23,901 |
Total Receivables | 227,595 |  |  | 176,789 |
Less: Allowance for Credit Losses | (1,757) |  |  | (1,836) |
Receivables, net of allowance for credit losses | $ | 225,838 |  |  | $ | 174,953 |
The following is a summary of activity in the allowance for credit losses for the six months ended June 30, 2022 and 2021:
(in thousands) | 2022 |  | 2021
Beginning Balance, January 1 | $ | 1,836 |  |  | $ | 3,215 |
Additions Charged to Expense | 382 |  |  | 284 |
Reductions for Amounts Written Off, Net of Recoveries | (461) |  |  | (773) |
Ending Balance, June 30 | $ | 1,757 |  |  | $ | 2,726 |
Inventories Inventories consist of the following as of June 30, 2022 and December 31, 2021:
(in thousands) | June 30, 2022 |  | December 31, 2021
Raw Material, Fuel and Supplies | $ | 79,735 |  |  | $ | 72,882 |
Work in Process | 34,700 |  |  | 35,705 |
Finished Goods | 32,529 |  |  | 39,903 |
Total Inventories | $ | 146,964 |  |  | $ | 148,490 |
Investments The following is a summary of our investments as of June 30, 2022 and December 31, 2021:
(in thousands) | June 30, 2022 |  | December 31, 2021
Corporate-Owned Life Insurance Policies | $ | 37,502 |  |  | $ | 41,078 |
Debt Securities | 8,351 |  |  | 9,202 |
Money Market Funds | 2,122 |  |  | 949 |
Mutual Funds | 5,546 |  |  | 5,432 |
Other Investments | 34 |  |  | 29 |
Total Investments | $ | 53,555 |  |  | $ | 56,690 |
The amount of unrealized gains and losses on debt securities as of June 30, 2022 and December 31, 2021 was not material and no unrealized losses were deemed to be other-than-temporary. In addition, the amount of unrealized gains and losses on marketable equity securities still held as of June 30, 2022 and December 31, 2021 was not material. Property, Plant and Equipment Major classes of property, plant and equipment as of June 30, 2022 and December 31, 2021 include:
(in thousands) | June 30, 2022 |  | December 31, 2021
Electric Plant |  |  |
Electric Plant in Service | $ | 2,785,850 |  |  | $ | 2,758,445 |
Construction Work in Progress | 96,763 |  |  | 74,926 |
Total Gross Electric Plant | 2,882,613 |  |  | 2,833,371 |
Less Accumulated Depreciation and Amortization | 843,296 |  |  | 817,302 |
Net Electric Plant | 2,039,317 |  |  | 2,016,069 |
Nonelectric Property, Plant and Equipment |  |  |
Nonelectric Property, Plant and Equipment in Service | 279,123 |  |  | 273,950 |
Construction Work in Progress | 18,483 |  |  | 16,611 |
Total Gross Nonelectric Property, Plant and Equipment | 297,606 |  |  | 290,561 |
Less Accumulated Depreciation and Amortization | 187,004 |  |  | 182,025 |
Net Nonelectric Property, Plant and Equipment | 110,602 |  |  | 108,536 |
Net Property, Plant and Equipment | $ | 2,149,919 |  |  | $ | 2,124,605 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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