Income Taxes - Income Tax Expense/(Benefit) Related to Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
U.S. Federal:
Current	$ 0	$ 0
Deferred	0	0
U.S. State:
Current	0	0
Deferred	0	0
Income tax expense (benefit)	$ 0	$ 0

No definition available.

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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