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Commitment and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2014
ACTDO DOE Funding				$ 6.9
ACTDO DOE Funding Reduction	60.00%	60.00%		60.00%
PBGC preliminary estimate of ERISA liability	$ 130.0	$ 130.0		$ 130.0
PBGC threshold for reduction in active plan participants	20.00%	20.00%		20.00%
CFCAA funding threshold related to liability under ERISA	90.00%	90.00%		90.00%
Liability for decontamination and decommissioning	$ 22.6	$ 22.6		$ 22.6	$ 22.6
ARO financial assurance	29.4	29.4		$ 29.4	$ 29.4
Termination benefit costs		$ 13.6
Scenario, Forecast [Member]
ACTDO DOE Funding – Monthly			$ 2.9
ACTDO DOE Funding			$ 35.0
Contract Reduction [Member]
Termination benefit costs	$ 8.7

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ACTDO DOE Funding

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ACTDO DOE Funding – Monthly

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ARO financial assurance

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After receiving the Company’s notification of the transition of employees at the Portsmouth GDP in 2011, the PBGC staff at that time informally advised Enrichment Corp. of its preliminary view that the Portsmouth GDP transition was a cessation of operations that triggered liability under ERISA Section 4062(e) and that its preliminary estimate was that the ERISA Section 4062(e) liability (computed taking into account the plan’s underfunding on a “termination basis,” which amount differs from that computed for GAAP purposes) for the Portsmouth GDP transition was approximately $130 million.

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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