CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating activities
Net income	$ 36,257	$ 30,229
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	39,754	38,476
Deferred income taxes	16,877	15,407
Amortization of investment tax credits	(337)	(332)
Allowance for equity funds used during construction	(3,339)	(1,726)
Net derivative losses (gains)	108	(344)
Changes in operating assets and liabilities:
Accounts receivable	2,105	1,134
Accrued unbilled revenues	10,460	9,928
Inventories	2,672	1,913
Other current assets	3,680	3,442
Accounts payable	(3,981)	(5,435)
Net regulatory assets and liabilities	(23,547)	(806)
Other current liabilities	(22)	1,670
Pension and other employee benefit obligations	(7,378)	(10,234)
Change in other noncurrent assets	101	329
Change in other noncurrent liabilities	872	630
Net cash provided by operating activities	74,282	84,281
Investing activities
Utility capital/construction expenditures	(124,624)	(81,603)
Allowance for equity funds used during construction	3,339	1,726
Other, net	8	(230)
Net cash used in investing activities	(121,277)	(80,107)
Financing activities
Repayments of short-term borrowings, net	(57,000)	(37,000)
Proceeds from (repayments of) notes payable to affiliate	30	(80)
Proceeds from Issuance of Long-term Debt	98,926	0
Repayments of long-term debt	(36)	(92)
Capital contributions from parent	20,479	45,093
Dividends paid to parent	(16,089)	(15,186)
Net cash provided by (used in) financing activities	46,310	(7,265)
Net change in cash and cash equivalents	(685)	(3,091)
Cash and cash equivalents at beginning of period	1,349	4,459
Cash and cash equivalents at end of period	664	1,368
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(11,516)	(12,122)
Cash (paid) received for income taxes, net	(359)	39
Supplemental disclosure of non-cash investing transactions:
Property, plant and equipment additions in accounts payable	$ 16,844	$ 9,134