Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 305,551	$ 341,421
Restricted cash	5,911	17,558
Accounts receivable and unbilled revenues, net	344,213	281,216
Available-for-sale investment securities, at fair value	2,574,618	1,970,417
Held-to-maturity investment securities, at amortized cost	522,270	226,947
Stock in Federal Home Loan Bank, at cost	10,000	8,680
Loans held for investment, net	5,139,984	5,232,642
Loans held for sale, at lower of cost or fair value	10,404	28,275
Property, plant and equipment, net
Land	102,910	103,428
Plant and equipment	8,085,793	7,851,185
Construction in progress	231,495	214,266
Property, plant and equipment, gross	8,420,198	8,168,879
Less – accumulated depreciation	(3,028,130)	(2,903,144)
Total property, plant and equipment, net	5,392,068	5,265,735
Operating lease right-of-use-assets	122,416	153,069
Regulatory assets	565,543	766,708
Other	747,469	629,149
Goodwill	82,190	82,190
Total assets	15,822,637	15,004,007
Liabilities
Accounts payable	205,544	182,347
Interest and dividends payable	19,889	23,547
Deposit liabilities	8,172,212	7,386,957
Short-term borrowings—other than bank	53,998	129,379
Other bank borrowings	88,305	89,670
Long-term debt, net—other than bank	2,321,937	2,119,129
Deferred income taxes	384,760	395,089
Operating lease liabilities	136,760	160,432
Regulatory liabilities	996,768	959,786
Defined benefit pension and other postretirement benefit plans liability	348,072	567,438
Other	669,215	618,438
Total liabilities	13,397,460	12,632,212
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: 109,311,785 shares and 109,181,124 shares at December 31, 2021 and 2020, respectively	1,685,496	1,678,368
Retained earnings	757,921	660,398
Accumulated other comprehensive income (loss), net of taxes
Net unrealized gains (losses) on securities	(32,037)	19,986
Unrealized losses on derivatives	(3,638)	(3,363)
Retirement benefit plans	(16,858)	(17,887)
Accumulated other comprehensive income (loss), net of taxes	(52,533)	(1,264)
Total shareholders’ equity	2,390,884	2,337,502
Total capitalization and liabilities	$ 15,822,637	$ 15,004,007