CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 39,027	$ 14,196
Accounts and notes receivable-less allowances of $12,139 and $11,387, respectively	129,835	163,772
Materials and supplies, fuel stock and stored natural gas	82,778	67,451
Regulatory assets	27,174	13,673
Other current assets	83,140	84,885
Total current assets	361,954	343,977
Net utility property	5,100,762	4,991,612
Goodwill	52,426	52,426
Non-current regulatory assets	870,095	750,443
Other property and investments-net and other non-current assets	261,064	263,639
Total assets	6,646,301	6,402,097
Current Liabilities:
Accounts payable	104,048	106,613
Long-term Debt, Current Maturities	250,000	0
Short-term borrowings	296,000	203,000
Regulatory liabilities	70,176	46,435
Other current liabilities	171,685	149,831
Total current liabilities	891,909	505,879
Long-term debt	1,758,961	2,008,534
Long-term debt to affiliated trusts	51,547	51,547
Pensions and other postretirement benefits	188,912	211,880
Deferred income taxes	620,020	594,712
Non-current regulatory liabilities	882,443	784,820
Other non-current liabilities and deferred credits	182,543	214,999
Total liabilities	4,576,335	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; 69,313,337 and 69,238,901 shares issued and outstanding, respectively	1,303,411	1,286,068
Accumulated other comprehensive loss	(13,755)	(14,378)
Retained earnings	780,310	758,036
Total shareholders’ equity	2,069,966	2,029,726
Total liabilities and equity	$ 6,646,301	$ 6,402,097