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Other Noncurrent Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Liabilities, Noncurrent [Abstract]
Asset retirement obligations	$ 47	$ 44
Environmental liabilities	0	2,621
Total Other Noncurrent Liabilities	$ 47	$ 2,665

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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