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Contingencies - Accrual for Environmental Remediation (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Environmental remediation accrual at December 31, 2013 $ 39
Estimated Costs 300
Payments (57)
Environmental remediation accrual at September 30, 2014 282
Bridgeport, CT
 
Environmental remediation accrual at December 31, 2013 39
Estimated Costs 0
Payments (22)
Environmental remediation accrual at September 30, 2014 17
Fremont, NC
 
Environmental remediation accrual at December 31, 2013 0
Estimated Costs 300
Payments (35)
Environmental remediation accrual at September 30, 2014 $ 265