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Income Taxes - Schedule of Effective Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax benefit at federal statutory rate	$ (115)	$ 218
State income tax benefit, net of federal impact	(32)	37
Change in state tax rate, net of federal benefit	331	(435)
Change in value of warrant	(74)	163
Effect of Sec. 382 Limitation		(1,303)
Percentage depletion carryover	9	4
Prior year true up	52	451
Other	23	50
Decrease in valuation allowance	(194)	815
Income tax benefit (expense)

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

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