Pension Plans And Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2011

Pension Plans And Other Postretirement Benefits [Abstract]

Components Of Net Periodic Benefit Costs

	Pension Benefits
	Nine Months Ended		Three Months Ended
	September 30,		September 30,
	2011	2010	2011	2010
Service cost	$3,469	$3,396	$ 1,382	$     1,052
Interest cost	10,160	9,702	4,232	3,262
Expected return on plan assets	(9,842)	(8,545)	(4,651)	(2,953)
Amortization of prior service cost	260	141	173	71
Amortization of actuarial loss	3,057	3,222	1,024	1,162
Capitalized costs	(2,761)	(2,493)	(954)	(808)
Settlement charge	-	1,068	-	184
Curtailment charge	100	-	100	-
Net periodic benefit cost	$  4,443	$  6,491	$ 1,306	$     1,970
	Other
	Postretirement Benefits
	Nine Months Ended		Three Months Ended
	September 30,		September 30,
	2011	2010	2011	2010
Service cost	$927	$847	$    176	$        237
Interest cost	2,071	1,831	447	591
Expected return on plan assets	(1,523)	(1,402)	(281)	(478)
Amortization of transition obligation	78	78	9	26
Amortization of prior service cost	(201)	(201)	(23)	(67)
Amortization of actuarial loss	627	464	216	122
Amortization of regulatory asset	102	102	34	34
Capitalized costs	(528)	(369)	(185)	(119)
Curtailment charge	27	-	27	-
Net periodic benefit cost	$  1,580	$  1,350	$    420	$        346