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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Current Assets    
Cash and Cash Equivalents $ 1,163 $ 21,199
Receivables, net of allowance for credit losses 113,959 107,631
Inventories 92,165 97,851
Regulatory Assets 21,900 21,650
Other Current Assets 5,645 6,529
Total Current Assets 234,832 254,860
Noncurrent Assets    
Investments 51,856 45,374
Property, Plant and Equipment, net of accumulated depreciation 2,049,273 1,753,794
Regulatory Assets 168,395 144,138
Intangible Assets, net of accumulated amortization 10,144 11,290
Goodwill 37,572 37,572
Other Noncurrent Assets 26,282 26,567
Total Noncurrent Assets 2,343,522 2,018,735
Total Assets 2,578,354 2,273,595
Current Liabilities    
Short-Term Debt 80,997 6,000
Current Maturities of Long-Term Debt 140,087 183
Accounts Payable 130,805 120,775
Accrued Salaries and Wages 26,908 22,730
Accrued Taxes 18,831 17,525
Regulatory Liabilities 16,663 7,480
Other Current Liabilities 22,495 15,048
Total Current Liabilities 436,786 189,741
Noncurrent Liabilities and Deferred Credits    
Pensions Benefit Liability 114,055 98,970
Other Postretirement Benefits Liability 67,359 71,437
Regulatory Liabilities 233,973 239,906
Deferred Income Taxes 153,376 131,941
Deferred Tax Credits 17,405 18,626
Other Noncurrent Liabilities 60,002 51,911
Total Noncurrent Liabilities and Deferred Credits 646,170 612,791
Commitments and Contingencies (Note 13)
Capitalization    
Long-Term Debt, net of current maturities 624,432 689,581
Stockholders' Equity Attributable to Parent [Abstract]    
Common Shares: 50,000,000 share authorized of $5 par value; 41,469,879 and 40,157,591 outstanding at December 31, 2020 and 2019 207,349 200,788
Additional Paid-In Capital 414,246 364,790
Retained Earnings 257,878 222,341
Accumulated Other Comprehensive Loss (8,507) (6,437)
Total Shareholders' Equity 870,966 781,482
Total Capitalization 1,495,398 1,471,063
Total Liabilities and Shareholders' Equity $ 2,578,354 $ 2,273,595