Consolidated Statement of Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	$ (34)	$ (5)	$ (68)	$ (9)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	60,043	52,964	116,876	106,908
Net Income (Loss) Attributable to Non-controlling Interest		35		14
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	59,942	52,951	116,674	106,881
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 59,777	$ 52,929	$ 116,394	$ 106,894