CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities:
Net income	$ 55,991	$ 48,283
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization including regulatory items	61,326	53,048
Pension and other postretirement benefit costs, net of contributions	(1,354)	(5,458)
Deferred income taxes and unamortized investment tax credit, net	12,744	21,579
Allowance for equity funds used during construction	(4,573)	(2,521)
Stock compensation expense	2,608	2,334
Loss on plant disallowance	86	2,409
Reverse gain on sale of assets	44	1,236
Non-cash (gain)/loss on derivatives	425	169
Cash flows impacted by changes in:
Accounts receivable and accrued unbilled revenues	4,334	(5,877)
Fuel, materials and supplies	(5,690)	6,652
Prepaid expenses, other current assets and deferred charges	(4,833)	533
Accounts payable and accrued liabilities	(20,237)	(21,708)
Asset retirement obligations	(1,232)	(363)
Interest, taxes accrued and customer deposits	24,571	22,170
Other liabilities and other deferred credits	(1,834)	(4,845)
Net cash provided by operating activities	122,376	117,641
Investing activities:
Capital expenditures - regulated	(149,778)	(107,074)
Capital expenditures and other investments - non-regulated	(1,140)	(1,290)
Restricted cash	(4,854)	2,585
Net cash used in investing activities	(155,772)	(105,779)
Financing activities:
Proceeds from first mortgage bonds, net		150,000
Long-term debt issuance costs		(1,607)
Proceeds from issuance of common stock, net of issuance costs	6,465	7,391
Net short-term debt borrowings/(repayments)	59,000	(24,000)
Redemption of senior notes		(98,000)
Dividends	(33,085)	(32,048)
Other	(205)	(590)
Net cash provided by financing activities	32,175	1,146
Net increase (decrease) in cash and cash equivalents	(1,221)	13,008
Cash and cash equivalents at beginning of period	3,475	3,375
Cash and cash equivalents at end of period	$ 2,254	$ 16,383