Income Taxes - Income Tax Rate Reconciliation (Details)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal statutory rate	34.00%	34.00%
State income tax rate, net of federal benefit	4.00%	(1.00%)
Permanent differences	(2.00%)	(2.00%)
Temporary differences	0.00%	(5.00%)
Impact in changes in tax law	22.00%	0.00%
Change in valuation allowance	(25.00%)	(22.00%)
Effective income tax rate	33.00%	4.00%

Effective Income Tax Rate Reconciliation, Permanent Differences

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Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Percent

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Effective Income Tax Rate Reconciliation, Temporary Differences

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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