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Investment in Joint Venture (Investee Losses in Excess of Investment) (Details) - Enfission LLC [Member]	12 Months Ended
	Dec. 31, 2018 USD ($)
Total contributions, Ownership Interest	50.00%
Total contributions, Carrying Amount	$ 5,600,000
Less: Share of the loss in investment in Enfission	(5,800,000)
Equity losses in excess of investment	$ (200,000)

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of realized and unrealized gain (loss) on investment.

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