Pensions and Other Postretirement Benefits Level 4 (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer			$ 2,000,000
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	388,000	285,000	784,000	572,000
Defined Benefit Plan, Interest Cost	411,000	425,000	831,000	853,000
Defined Benefit Plan, Expected Return on Plan Assets	(317,000)	(304,000)	(640,000)	(610,000)
Defined Benefit Plan, Amortization of Transition Obligations (Assets)	(22,000)	(22,000)	(44,000)	(44,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	40,000	40,000	80,000	80,000
Defined Benefit Plan, Amortization of Gains (Losses)	117,000	0	234,000	0
Defined Benefit Plan, Net Periodic Benefit Cost	$ 617,000	$ 424,000	$ 1,245,000	$ 851,000