Changes in Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2013

Changes in Accumulated Other Comprehensive Loss

Schedule of changes in accumulated other comprehensive loss including reclassification adjustments, by component

The following table shows the changes in accumulated other comprehensive loss, including reclassification adjustments, net of tax, by component for the three and nine months ended September 30, 2013 (dollars in thousands):

	Three Months Ended September 30, 2013									Nine Months Ended September 30, 2013
	Derivative Instruments			Pension and Other Postretirement Benefits			Total			Derivative Instruments			Pension and Other Postretirement Benefits			Total
Beginning balance	$	(40,319	)	$	(64,138	)	$	(104,457	)	$	(49,592	)	$	(64,416	)	$	(114,008	)
Other comprehensive loss before reclassifications	(145		)	—			(145		)	(247		)	(1,635		)	(1,882		)
Amounts reclassified from accumulated other comprehensive loss	14,310		(a)	957		(b)	15,267			23,685		(a)	2,870		(b)	26,555
Net current period other comprehensive income	14,165			957			15,122			23,438			1,235			24,673
Ending balance	$	(26,154	)	$	(63,181	)	$	(89,335	)	$	(26,154	)	$	(63,181	)	$	(89,335	)

(a) These amounts represent realized gains and losses and are included in the computation of fuel and purchased power costs and are subject to the PSA.  See Note 7.

(b) These amounts primarily represent amortization of actuarial loss, and are included in the computation of net periodic pension cost.  See Note 4.