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Remediation Obligations (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Site Contingency, Time Frame of Disbursements	15 years
Accrual for Environmental Loss Contingencies	$ 6,947	$ 6,947
Accrued Environmental Loss Contingencies, Current	1,307	1,307
Accrued Environmental Loss Contingencies, Noncurrent	$ 5,640	$ 5,640

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.

+ References+ Details