Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	[1]	$ 300,687	$ 175,542
Accounts receivable and unbilled revenues, net		269,207	313,696
Available-for-sale investment securities, at fair value		693,520	550,394
Stock in Federal Home Loan Bank, at cost		10,678	69,302
Loans receivable held for investment, net		4,410,817	4,389,033
Loans held for sale, at lower of cost or fair value		5,581	8,424
Property, plant and equipment, net of accumulated depreciation of $2,288,804 and $2,250,950 at the respective dates		4,269,241	4,148,774
Regulatory assets		904,559	905,264
Other		493,151	542,523
Goodwill		82,190	82,190
Total assets		11,439,631	11,185,142
Liabilities
Accounts payable		183,094	186,425
Interest and dividends payable		25,360	25,336
Deposit liabilities		4,803,271	4,623,415
Short-term borrowings—other than bank		124,543	118,972
Other bank borrowings		314,157	290,656
Long-term debt, net—other than bank		1,506,546	1,506,546
Deferred income taxes		632,718	633,570
Regulatory liabilities		357,089	344,849
Contributions in aid of construction		482,760	466,432
Defined benefit pension and other postretirement benefit plans liability		615,945	632,845
Other		461,335	531,230
Total liabilities		9,506,818	9,360,276
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: 107,446,530 shares and 102,565,266 shares at the respective dates		1,626,569	1,521,297
Retained earnings		298,398	296,654
Accumulated other comprehensive loss, net of tax benefits		(26,447)	(27,378)
Total shareholders’ equity		1,898,520	1,790,573
Total liabilities and shareholders’ equity		$ 11,439,631	$ 11,185,142

[1] As restated - See Note 1, “Basis of presentation - Restatement of previously issued financial statements.”