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Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Operating Revenues: |  |  |  |
Total Operating Revenues | $ 192,756 | $ 229,203 | $ 427,503 | $ 475,175
Operating Expenses |  |  |  |
Production Fuel – Electric | 8,788 | 8,296 | 22,523 | 27,216
Electric Operation and Maintenance Expenses | 33,179 | 39,856 | 73,794 | 78,238
Cost of Products Sold (depreciation included below) | 73,832 | 97,996 | 159,711 | 188,578
Other Nonelectric Expenses | 10,762 | 13,262 | 22,662 | 26,739
Depreciation and Amortization | 20,436 | 19,441 | 40,835 | 38,572
Property Taxes – Electric | 4,168 | 3,900 | 8,268 | 7,859
Total Operating Expenses | 164,847 | 202,384 | 360,305 | 408,787
Operating Income | 27,909 | 26,819 | 67,198 | 66,388
Interest Charges | 8,662 | 7,825 | 16,785 | 15,651
Nonservice Cost Components of Postretirement Benefits | 868 | 1,075 | 1,739 | 2,110
Other Income | 2,410 | 850 | 2,021 | 2,094
Income Before Income Taxes | 20,789 | 18,769 | 50,695 | 50,721
Income Tax Expense | 3,808 | 3,343 | 9,446 | 8,971
Net Income | $ 16,981 | $ 15,426 | $ 41,249 | $ 41,750
Average Number of Common Shares Outstanding – Basic (in shares) | 40,513,286 | 39,712,036 | 40,365,214 | 39,684,679
Average Number of Common Shares Outstanding – Diluted (in shares) | 40,676,761 | 39,917,831 | 40,560,549 | 39,910,499
Basic Earnings Per Common Share (in dollars per share) | $ 0.42 | $ 0.39 | $ 1.02 | $ 1.05
Diluted Earnings Per Common Share (in dollars per share) | $ 0.42 | $ 0.39 | $ 1.02 | $ 1.05
Electricity [Member] |  |  |  |
Operating Revenues: |  |  |  |
Revenues from Contracts with Customers | $ 97,921 | $ 101,861 | $ 217,878 | $ 231,006
Changes in Accrued Revenues under Alternative Revenue Programs | 209 | 369 | 122 | (680)
Total Electric Revenues | 98,130 | 102,230 | 218,000 | 230,326
Product [Member] |  |  |  |
Operating Revenues: |  |  |  |
Revenues from Contracts with Customers | 94,626 | 126,973 | 209,503 | 244,849
Electricity, Purchased [Member] |  |  |  |
Operating Expenses |  |  |  |
Purchased Power – Electric System Use | $ 13,682 | $ 19,633 | $ 32,512 | $ 41,585

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