CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Net income	$ 20,905	$ 12,630
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization including regulatory items	19,491	16,813
Pension and other postretirement benefit costs, net of contributions	3,320	3,423
Deferred income taxes and unamortized investment tax credit, net	2,145	5,243
Allowance for equity funds used during construction	(1,252)	(526)
Stock compensation expense	1,381	1,351
Loss on plant disallowance		2,409
Reverse gain on sale of assets	0	1,236
Non-cash (gain)/loss on derivatives	(683)	7
Cash flows impacted by changes in:
Accounts receivable and accrued unbilled revenues	7,326	(640)
Fuel, materials and supplies	4,290	7,563
Prepaid expenses, other current assets and deferred charges	(1,326)	119
Accounts payable and accrued liabilities	(22,873)	(19,497)
Interest, taxes accrued and customer deposits	20,781	12,820
Asset retirement obligation	(17)
Other liabilities and other deferred credits	1,084	1,126
Net cash provided by operating activities	54,572	44,077
Investing activities:
Capital expenditures - regulated	(45,882)	(37,398)
Capital expenditures and other investments - non-regulated	(481)	(362)
Restricted cash	596	2,585
Net cash used in investing activities	(45,767)	(35,175)
Financing activities:
Proceeds from issuance of common stock, net of issuance costs	2,416	2,764
Net short-term borrowings/(repayments)	500	(1,000)
Dividends	(10,994)	(10,644)
Other	(57)	(227)
Net cash used in financing activities	(8,135)	(9,107)
Net increase (decrease) in cash and cash equivalents	670	(205)
Cash and cash equivalents at beginning of period	3,475	3,375
Cash and cash equivalents at end of period	$ 4,145	$ 3,170