Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents, December 31	$ 199,877	$ 305,551
Restricted cash	5,050	5,911
Accounts receivable and unbilled revenues, net	511,903	344,213
Available-for-sale investment securities, at fair value	1,429,667	2,574,618
Held-to-maturity investment securities, at amortized cost	1,251,747	522,270
Stock in Federal Home Loan Bank, at cost	26,560	10,000
Loans held for investment, net	5,906,690	5,139,984
Loans held for sale, at lower of cost or fair value	824	10,404
Property, plant and equipment, net
Land	109,381	102,910
Plant and equipment	8,427,748	8,085,793
Right-of-use assets - finance lease	49,370	0
Construction in progress	293,048	231,495
Property, plant and equipment, gross	8,879,547	8,420,198
Less – accumulated depreciation	(3,192,545)	(3,028,130)
Total property, plant and equipment, net	5,687,003	5,392,068
Operating lease right-of-use-assets	115,684	122,416
Regulatory assets	242,513	565,543
Other	824,536	747,469
Goodwill	82,190	82,190
Total assets	16,284,244	15,822,637
Liabilities
Accounts payable	251,460	205,544
Interest and dividends payable	21,333	19,889
Deposit liabilities	8,169,696	8,172,212
Short-term borrowings—other than bank	172,568	53,998
Other bank borrowings	695,120	88,305
Long-term debt, net—other than bank	2,384,980	2,321,937
Deferred income taxes	262,462	384,760
Operating lease liabilities	126,604	136,760
Finance lease liabilities	48,709	0
Regulatory liabilities	1,055,650	996,768
Defined benefit pension and other postretirement benefit plans liability	71,813	348,072
Other	787,057	669,215
Total liabilities	14,047,452	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: 109,470,795 shares and 109,311,785 shares at December 31, 2022 and 2021, respectively	1,692,697	1,685,496
Retained earnings	845,830	757,921
Accumulated other comprehensive income (loss), net of taxes
Net unrealized losses on securities	(328,904)	(32,037)
Unrealized gains (losses) on derivatives	1,991	(3,638)
Retirement benefit plans	(9,115)	(16,858)
Accumulated other comprehensive income (loss), net of taxes	(336,028)	(52,533)
Total shareholders’ equity	2,202,499	2,390,884
Total capitalization and liabilities	$ 16,284,244	$ 15,822,637