CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating activities:
Net income	$ 24,287	$ 20,512
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization including regulatory items	35,268	40,561
Pension and other postretirement benefit costs, net of contributions	7,174	1,187
Deferred income taxes and unamortized investment tax credit, net	12,096	13,496
Allowance for equity funds used during construction	(1,393)	(103)
Stock compensation expense	1,900	1,404
Loss on plant disallowance	2,409
Regulatory reversal of gain on sale of assets	1,236
Non-cash (gain)/loss on derivatives	(67)	4
Other		(16)
Cash flows impacted by changes in:
Accounts receivable and accrued unbilled revenues	(7,140)	(2,062)
Fuel, materials and supplies	8,138	2,424
Prepaid expenses, other current assets and deferred charges	542	(2,602)
Accounts payable and accrued liabilities	(20,639)	(16,084)
Interest, taxes accrued and customer deposits	9,832	8,587
Other liabilities and other deferred credits	(2,638)	4,344
Net cash provided by operating activities	71,005	71,652
Investing activities:
Capital expenditures - regulated	(74,834)	(60,760)
Capital expenditures and other investments - non-regulated	(934)	(1,504)
Decrease in restricted cash	2,585
Net cash used in investing activities	(73,183)	(62,264)
Financing activities:
Proceeds from first mortgage bonds, net	150,000	88,000
Long-term debt issuance costs	(1,744)	(974)
Redemption of senior notes	(98,000)
Proceeds from issuance of common stock net of issuance costs	5,161	4,666
Repayment of first mortgage bonds		(88,029)
Net short-term borrowings/(repayments)	(24,000)	5,850
Dividends	(21,332)	(21,077)
Other	(432)	(458)
Net cash provided by/(used in) financing activities	9,653	(12,022)
Net increase/(decrease) in cash and cash equivalents	7,475	(2,634)
Cash and cash equivalents at beginning of period	3,375	5,408
Cash and cash equivalents at end of period	$ 10,850	$ 2,774