CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating activities:
Net income	$ 9,804	$ 11,922
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization including regulatory items	20,846	22,796
Pension and other postretirement benefit costs, net of contributions	1,035	(11,768)
Deferred income taxes and unamortized investment tax credit, net	6,495	8,537
Allowance for equity funds used during construction	(50)
Stock compensation expense	871	867
Cash flows impacted by changes in:
Accounts receivable and accrued unbilled revenues	6,795	6,052
Fuel, materials and supplies	46	1,001
Prepaid expenses, other current assets and deferred charges	(1,281)	(4,070)
Accounts payable and accrued liabilities	(18,254)	(15,066)
Interest, taxes accrued and customer deposits	10,850	9,556
Accumulated provision - rate refunds		375
Other liabilities and other deferred credits	1,970	3,829
Net cash provided by operating activities	39,127	34,031
Investing activities:
Capital expenditures - regulated	(30,355)	(16,957)
Capital expenditures and other investments - non-regulated	(699)	(292)
Net cash used in investing activities	(31,054)	(17,249)
Financing activities:
Proceeds from issuance of common stock, net of issuance costs	2,230	3,073
Net short-term borrowings/(repayments)	10,500	(13,000)
Repayment of first mortgage bonds	(13,200)
Dividends	(10,514)	(13,337)
Other	(228)	(212)
Net cash used in financing activities	(11,212)	(23,476)
Net decrease in cash and cash equivalents	(3,139)	(6,694)
Cash and cash equivalents at beginning of period	5,408	14,499
Cash and cash equivalents at end of period	$ 2,269	$ 7,805