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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Net operating losses $ 9,540 $ 5,992
Environmental and closure reserves 2,124 2,158
Depreciation and amortization 907
Other 1,263 1,252
Depreciation and amortization (2,418)
Goodwill and indefinite lived intangible assets (586) (1,694)
Prepaid expenses (30) (50)
Deferred tax assets liabilities gross 9,893 8,565
Valuation allowance (10,479) (10,259)
Net deferred income tax liabilities $ (586) $ (1,694)