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Commitments and Contingencies - Environmental contingencies (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013 South Brunswick, New Jersey [Member]	Mar. 31, 2014 Oakville, Connecticut [Member]
Site Contingency [Line Items]
Accrued expenses associated with remediation project	$ 2.6	$ 0.1

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.

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