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Business Description And Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Accounts Receivable and Allowance for Doubtful Accounts | Following is a summary of accounts receivable as of December 31 (in thousands):
| 2021 | 2020
Billed Accounts Receivable | $ | 181,027 |  | $ | 146,899 |
Unbilled Revenue | $ | 142,738 |  | $ | 126,065 |
Less Allowance for Credit Losses | $ | (2,113) |  | $ | (7,003) |
Accounts Receivable, net | $ | 321,652 |  | $ | 265,961 |
Financing Receivable, Current, Allowance for Credit Loss | Changes to allowance for credit losses for the years ended December 31, were as follows (in thousands):
|  | Balance at Beginning of Year |  |  |  | Additions Charged to Costs and Expenses |  | Recoveries and Other Additions |  | Write-offs and Other Deductions |  | Balance at End of Year
2021 |  | $ | 7,003 |  |  |  |  | $ | 2,444 |  | (a) | $ | 3,560 |  |  | $ | (10,894) |  |  | $ | 2,113 |
2020 |  | $ | 2,444 |  |  |  |  | $ | 8,927 |  | (a) | $ | 4,728 |  |  | $ | (9,096) |  |  | $ | 7,003 |
2019 |  | $ | 3,209 |  |  |  |  | $ | 5,795 |  |  | $ | 3,942 |  |  | $ | (10,502) |  |  | $ | 2,444 |
_________________ (a) Due to the COVID-19 pandemic, all of our jurisdictions temporarily suspended disconnections due to non-payment for a period of time, which increased our accounts receivable arrears balances. As a result, we increased our allowance for credit losses and bad debt expense for the year ended December 31, 2020 by an incremental $3.3 million. All jurisdiction disconnect moratoriums ended on or before May 3, 2021.
Materials, Supplies and Fuel | The following amounts by major classification are included in Materials, supplies and fuel on the accompanying Consolidated Balance Sheets as of December 31 (in thousands):
| 2021 | 2020
Materials and supplies | $ | 86,400 |  | $ | 85,250 |
Fuel | 1,267 |  | 1,531 |
Natural gas in storage | 63,312 |  | 30,619 |
Total materials, supplies and fuel | $ | 150,979 |  | $ | 117,400 |
Investments | The following table presents the carrying value of our investments (in thousands), which are included in Other assets, non-current on the Consolidated Balance Sheets, as of December 31:
| 2021 | 2020
Investment in privately held oil and gas company | $ | 1,500 |  | $ | 1,500 |
Cash surrender value of life insurance contracts | 12,365 |  | 13,628 |
Other investments | 1,616 |  | 682 |
Total investments | $ | 15,481 |  | $ | 15,810 |
Property, Plant and Equipment (AFUDC) | The following table presents AFUDC amounts (in thousands) for the years ended December 31:
| Income Statement Location | 2021 | 2020 | 2019
AFUDC Borrowed | Interest expense incurred net of amounts capitalized (including amortization of debt issuance costs, premiums and discounts) | $ | 4,068 |  | $ | 5,617 |  | $ | 6,556 |
AFUDC Equity | Other income (expense), net | 593 |  | 318 |  | 472 |
Goodwill | As of December 31, 2021 and 2020, Goodwill balances were as follows (in thousands):
| Electric Utilities | Gas Utilities | Total
Goodwill | $ | 257,244 |  | $ | 1,042,210 |  | $ | 1,299,454 |
Intangible Assets | Changes to intangible assets for the years ended December 31, were as follows (in thousands):
| 2021 | 2020 | 2019
Intangible assets, net, beginning balance | $ | 11,944 |  | $ | 13,266 |  | $ | 14,337 |
Amortization expense (a) | (1,174) |  | (1,322) |  | (1,071) |
Intangible assets, net, ending balance | $ | 10,770 |  | $ | 11,944 |  | $ | 13,266 |
____________________ (a) Amortization expense for existing intangible assets is expected to be $1.2 million for each year of the next five years.
Schedule of Accrued Liabilities | The following amounts by major classification are included in Accrued liabilities on the accompanying Consolidated Balance Sheets as of December 31 (in thousands):
| 2021 | 2020
Accrued employee compensation, benefits and withholdings | $ | 74,387 |  | $ | 77,806 |
Accrued property taxes | 50,874 |  | 47,105 |
Customer deposits and prepayments | 48,814 |  | 52,185 |
Accrued interest | 33,680 |  | 31,520 |
Other (none of which is individually significant) | 37,004 |  | 34,996 |
Total accrued liabilities | $ | 244,759 |  | $ | 243,612 |
Earnings Per Share of Common Stock | A reconciliation of share amounts used to compute earnings per share is as follows for the years ended December 31 (in thousands):
| 2021 | 2020 | 2019
Net income available for common stock | $ | 236,744 |  | $ | 227,608 |  | $ | 199,310 |
Weighted average shares - basic | 63,219 |  | 62,378 |  | 60,662 |
Dilutive effect of: |  |  |
Equity compensation | 106 |  | 61 |  | 136 |
Weighted average shares - diluted | 63,325 |  | 62,439 |  | 60,798 |
Net income available for common stock, per share - Diluted | $ | 3.74 |  | $ | 3.65 |  | $ | 3.28 |
Antidilutive Securities | The following securities were excluded from the diluted earnings per share computation for the years ended December 31 because of their anti-dilutive nature (in thousands):
| 2021 | 2020 | 2019
Equity compensation | 13 |  | 60 |  | 1 |
Anti-dilutive shares excluded from computation of earnings per share | 13 |  | 60 |  | 1 |

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