Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 278,452	$ 300,478
Accounts receivable and unbilled revenues, net	237,950	242,766
Available-for-sale investment securities	1,105,182	820,648
Stock in Federal Home Loan Bank, at cost	11,218	10,678
Loans receivable held for investment, net	4,683,160	4,565,781
Loans held for sale, at lower of cost or fair value	18,817	4,631
Property, plant and equipment, net
Land	97,423	90,890
Plant and equipment	6,727,935	6,444,214
Construction in progress	222,455	181,873
Property, plant and equipment, gross	7,047,813	6,716,977
Less – accumulated depreciation	(2,444,348)	(2,339,319)
Total property, plant and equipment, net	4,603,465	4,377,658
Regulatory assets	957,451	896,731
Other	447,621	480,457
Goodwill	82,190	82,190
Total assets	12,425,506	11,782,018
Liabilities
Accounts payable	143,279	138,523
Interest and dividends payable	25,225	26,042
Deposit liabilities	5,548,929	5,025,254
Short-term borrowings—other than bank	0	103,063
Other bank borrowings	192,618	328,582
Long-term debt, net—other than bank	1,619,019	1,578,368
Deferred income taxes	728,806	680,877
Regulatory liabilities	410,693	371,543
Contributions in aid of construction	543,525	506,087
Defined benefit pension and other postretirement benefit plans liability	638,854	589,918
Other	473,512	471,828
Total liabilities	10,324,460	9,820,085
Preferred stock of subsidiaries - not subject to mandatory redemption	34,293	34,293
Commitments and contingencies
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: 108,583,413 shares and 107,460,406 shares at December 31, 2016 and 2015, respectively	1,660,910	1,629,136
Retained earnings	438,972	324,766
Accumulated other comprehensive loss, net of tax benefits
Net unrealized losses on securities	(7,931)	(1,872)
Unrealized losses on derivatives	(454)	(54)
Retirement benefit plans	(24,744)	(24,336)
Accumulated other comprehensive loss, net of tax benefits	(33,129)	(26,262)
Total shareholders’ equity	2,066,753	1,927,640
Total capitalization and liabilities	$ 12,425,506	$ 11,782,018