Income Taxes - Summary of Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Deferred tax assets (liabilities): Employee accruals	$ 70	$ 74
Deferred tax assets (liabilities): Cash to accrual	(15)	(31)
Deferred tax assets (liabilities): Accrued workers' compensation and other	26	33
Deferred tax assets (liabilities): State deduction		7
Deferred tax assets (liabilities): Acquisition fees		14
Deferred tax assets (liabilities): Sec. 163(j) interest limitation	38
Deferred tax assets (liabilities): Federal and State net operating loss carryforwards	79
Deferred tax liabilities: Intangibles	(5)
Deferred tax liabilities: Fixed assets	(19)	(13)
Deferred income taxes, net	173	85
Valuation allowance	(173)	(85)
Deferred tax assets (liabilities)