Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 228,417	$ 175,542
Accounts receivable and unbilled revenues, net	305,448	313,696
Available-for-sale investment securities, at fair value	785,837	550,394
Stock in Federal Home Loan Bank, at cost	10,678	69,302
Loans receivable held for investment, net	4,487,130	4,389,033
Loans held for sale, at lower of cost or fair value	5,598	8,424
Property, plant and equipment, net of accumulated depreciation of $2,318,227 and $2,250,950 at the respective dates	4,317,121	4,148,774
Regulatory assets	897,948	905,264
Other	453,099	542,523
Goodwill	82,190	82,190
Total assets	11,573,466	11,185,142
Liabilities
Accounts payable	152,896	186,425
Interest and dividends payable	25,914	25,336
Deposit liabilities	4,825,954	4,623,415
Short-term borrowings—other than bank	171,992	118,972
Other bank borrowings	368,593	290,656
Long-term debt, net—other than bank	1,506,546	1,506,546
Deferred income taxes	643,951	633,570
Regulatory liabilities	362,251	344,849
Contributions in aid of construction	495,667	466,432
Defined benefit pension and other postretirement benefit plans liability	607,682	632,845
Other	456,726	531,230
Total liabilities	9,618,172	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: 107,458,641 shares and 102,565,266 shares at the respective dates	1,627,259	1,521,297
Retained earnings	315,759	296,654
Accumulated other comprehensive loss, net of tax benefits	(22,017)	(27,378)
Total shareholders’ equity	1,921,001	1,790,573
Total liabilities and shareholders’ equity	$ 11,573,466	$ 11,185,142