Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 175,280	$ 305,551
Restricted cash	3,898	5,911
Accounts receivable and unbilled revenues, net	519,774	344,213
Available-for-sale investment securities, at fair value	2,232,336	2,574,618
Held-to-maturity investment securities, at amortized cost	510,879	522,270
Stock in Federal Home Loan Bank, at cost	15,000	10,000
Loans held for investment, net	5,616,984	5,139,984
Loans held for sale, at lower of cost or fair value	3,101	10,404
Property, plant and equipment, net of accumulated depreciation	5,599,937	5,392,068
Operating lease right-of-use assets	121,302	122,416
Regulatory assets	497,188	565,543
Other	886,999	747,469
Goodwill	82,190	82,190
Total assets	16,264,868	15,822,637
Liabilities
Accounts payable	213,587	205,544
Interest and dividends payable	36,158	19,889
Deposit liabilities	8,258,885	8,172,212
Short-term borrowings—other than bank	171,125	53,998
Other bank borrowings	409,040	88,305
Long-term debt, net—other than bank	2,430,326	2,321,937
Deferred income taxes	263,929	384,760
Operating lease liabilities	130,914	136,760
Finance lease liabilities	49,202	0
Regulatory liabilities	1,030,376	996,768
Defined benefit pension and other postretirement benefit plans liability	333,664	348,072
Other	740,447	669,215
Total liabilities	14,067,653	13,397,460
Preferred stock of subsidiaries - not subject to mandatory redemption	34,293	34,293
Commitments and contingencies (Notes 3 and 4)
Shareholders’ equity
Preferred stock, no par value, authorized 10,000,000 shares; issued: none	0	0
Common stock, no par value, authorized 200,000,000 shares; issued and outstanding: 109,470,325 shares and 109,311,785 shares at September 30, 2022 and December 31, 2021, respectively	1,689,672	1,685,496
Retained earnings	826,794	757,921
Accumulated other comprehensive loss, net of tax benefits	(353,544)	(52,533)
Total shareholders’ equity	2,162,922	2,390,884
Total liabilities and shareholders’ equity	$ 16,264,868	$ 15,822,637