Income Taxes - Summary of Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
U.S. federal income taxes at the statutory rate	$ (1,503)	$ 1,945
State taxes, net of federal effects	(69)	146
Other permanent differences	38	(244)
Equity-based compensation	84	0
Transaction costs	93	0
Goodwill impairment	840	0
Rate change	550	1,725
Change in valuation allowance	(20)	(3,802)
Income tax expense (benefit)	$ 13	$ (230)

Effective Income Tax Rate Reconciliation, Transaction Costs

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Income Tax Reconciliation, Other Permanent Differences

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

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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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