Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 4,615	$ 7,634
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of electric plant in service	20,568	19,368
Amortization of Nuclear Fuel	11,476	11,510
Deferred income taxes, net	761	3,103
Allowance for equity funds used during construction	(2,906)	(2,663)
Other amortization and accretion	4,141	4,081
Gain on sale of assets	(1,499)	0
Other operating activities	(2,811)	179
Change in:
Accounts receivable	6,600	(3,645)
Inventories	525	(1,220)
Net overcollection of fuel revenues	2,011	3,844
Prepayments and other	(2,968)	(3,519)
Accounts payable	(8,958)	(18,585)
Taxes accrued	(379)	(866)
Other current liabilities	1,673	2,004
Deferred charges and credits	(1,537)	(13,492)
Net cash provided by operating activities	31,312	7,733
Cash flows from investing activities:
Cash additions to utility property, plant and equipment	(48,255)	(55,406)
Cash additions to nuclear fuel	(11,822)	(9,888)
Capitalized interest and AFUDC:
Utility property, plant and equipment	(4,590)	(4,286)
Nuclear fuel	(1,246)	(1,302)
Allowance for equity funds used during construction	2,906	2,663
Decommissioning trust funds:
Purchases, including funding of $1.1 million	(31,242)	(13,378)
Sales and maturities	28,827	10,907
Proceeds from sale of assets	1,679	0
Other investing activities	375	3,285
Net cash used for investing activities	(63,368)	(67,405)
Cash flows from financing activities:
Dividends paid	(10,676)	(10,050)
Borrowings under the revolving credit facility:
Proceeds	51,563	12,586
Payments	(19,964)	(9,702)
Other financing activities	(1,067)	(544)
Net cash provided by (used for) financing activities	19,856	(7,710)
Net decrease in cash and cash equivalents	(12,200)	(67,382)
Cash and cash equivalents at beginning of period	25,592	111,057
Cash and cash equivalents at end of period	$ 13,392	$ 43,675