Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 110,095	$ 99,600
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of electric plant in service	76,050	71,941
Amortization of Nuclear Fuel	30,933	29,822
Deferred income taxes, net	25,071	24,369
Allowance for equity funds used during construction	(1,996)	(2,462)
Other amortization and accretion	13,377	15,427
Net gains on decommissioning trust funds	(25,427)	(9,683)
Other operating activities	(545)	31
Change in:
Accounts receivable	(34,897)	(33,958)
Inventories	(3,413)	(1,480)
Prepayments and other	(11,290)	(5,716)
Accounts payable	1,355	4,920
Taxes accrued	9,685	7,632
Interest accrued	2,370	8,491
Net over-collection of fuel revenues	3,327	3,680
Other current liabilities	(217)	9,185
Deferred charges and credits	(3,474)	(321)
Net cash provided by operating activities	191,004	221,478
Cash flows from investing activities:
Cash additions to utility property, plant and equipment	(159,992)	(171,433)
Cash additions to nuclear fuel	(19,224)	(28,769)
Insurance proceeds received for equipment	0	5,351
Capitalized interest and AFUDC:
Utility property, plant and equipment	(5,016)	(5,013)
Nuclear fuel and other	(4,424)	(4,067)
Allowance for equity funds used during construction	1,996	2,462
Decommissioning trust funds:
Purchases, including funding of $1.6 million and $1.6 million, respectively	(361,577)	(74,438)
Sales and maturities	356,009	70,156
Other investing activities	1,249	3,639
Net cash used for investing activities	(190,979)	(202,112)
Cash flows from financing activities:
Dividends paid	(46,035)	(42,898)
Borrowings under the revolving credit facility:
Proceeds	430,483	504,707
Payments	(379,864)	(658,878)
Pollution control bonds:
Proceeds	100,600	0
Payments	(100,600)	0
Other financing activities	(1,912)	(3,322)
Net cash provided by (used for) financing activities	2,672	(10,391)
Net increase in cash and cash equivalents	2,697	8,975
Cash and cash equivalents at beginning of period	12,900	6,990
Cash and cash equivalents at end of period	15,597	15,965
4.22% Senior Notes, due 2028
Pollution control bonds:
Proceeds from issuance of senior notes	0	125,000
4.07% RGRT Senior Notes, due 2025
Pollution control bonds:
Proceeds from issuance of senior notes	$ 0	$ 65,000