Consolidated Statement of Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Mar. 31, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	$ (5)	$ (26)	$ (9)	$ (52)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	52,964	40,460	106,908	86,528
Net Income (Loss) Attributable to Non-controlling Interest				(365)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	52,951		106,881	86,376
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 52,929	$ 40,527	$ 106,894	$ 86,893