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Income Taxes - Schedule of Deferred Tax Assets (Liabilities) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Federal net operating loss carryforward $ 11,468 $ 10,876
Accrued interest to related parties, not deductible until paid 449 334
Accrued compensation 101 0
Basis of intangible assets 368 221
Valuation allowance (5,256) (3,950)
Total deferred tax assets 7,130 7,481
Basis of property, plant and equipment 6,821 7,447
Bad debt expense 0 34
Prepaid expenses 138 0
Basis in foreign entity 171 0
Total deferred tax liabilities 7,130 7,481
Net deferred tax liabilities $ 0 $ 0