CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 19,224	$ 14,196
Accounts and notes receivable-less allowances of $12,360 and $11,387, respectively	130,696	163,772
Materials and supplies, fuel stock and stored natural gas	87,203	67,451
Regulatory assets	37,768	13,673
Other current assets	81,384	84,885
Total current assets	356,275	343,977
Net utility property	5,168,825	4,991,612
Goodwill	52,426	52,426
Non-current regulatory assets	875,952	750,443
Other property and investments-net and other non-current assets	278,000	263,639
Total assets	6,731,478	6,402,097
Current Liabilities:
Accounts payable	102,824	106,613
Long-term Debt, Current Maturities	250,000	0
Short-term borrowings	199,075	203,000
Regulatory liabilities	75,559	46,435
Other current liabilities	171,728	149,831
Total current liabilities	799,186	505,879
Long-term debt	1,898,235	2,008,534
Long-term debt to affiliated trusts	51,547	51,547
Pensions and other postretirement benefits	177,333	211,880
Deferred income taxes	634,215	594,712
Non-current regulatory liabilities	886,351	784,820
Other non-current liabilities and deferred credits	182,975	214,999
Total liabilities	4,629,842	4,372,371
Commitments and Contingencies (See Notes to Condensed Consolidated Financial Statements)
Shareholders’ Equity:
Common stock, no par value; 200,000,000 shares authorized; 70,767,212 and 69,238,901 shares issued and outstanding, respectively	1,349,960	1,286,068
Accumulated other comprehensive loss	(13,451)	(14,378)
Retained earnings	765,127	758,036
Total shareholders’ equity	2,101,636	2,029,726
Total liabilities and equity	$ 6,731,478	$ 6,402,097