Commitments and Contingencies (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015 USD ($) a	Sep. 30, 2015 USD ($) a	Dec. 31, 2014 USD ($)
Restructuring Cost and Reserve [Line Items]
Asset Retirement Obligation	$ 1,748	$ 1,748	$ 1,807
Portion Of Site For Which Certificate Not Received \| a	80	80
Accrual for Environmental Loss Contingencies, Increase (Decrease) for Revision in Estimates	$ 388
Cost to complete remediation activities	600	$ 600
Restructuring Reserve [Roll Forward]
Restructuring Reserve		(2,367)
Restructuring Charges		(3,729)
Payments for Restructuring		3,797
Restructuring Reserve	(2,299)	(2,299)
Deferred Lease Revenue [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges		364
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve		0
Restructuring Charges		(1,750)
Payments for Restructuring		1,750
Restructuring Reserve	0	0
Oil And Gas [Member] \| Special Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve		(2,367)
Restructuring Charges		(1,979)
Payments for Restructuring		2,047
Restructuring Reserve	$ (2,299)	$ (2,299)

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The Increase or Decrease in the accrual for environmental loss in the period from revisions in estimates to existing obligations. The amount does not relate to changes in the environmental accrual related to business acquisitions or divestitures, or to currency movements.

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Carrying amount as of the balance sheet date of the liability for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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