Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Components of Income (Loss) from Continuing Operations Before Income Taxes

The following table shows the components of loss from continuing operations before income taxes (in thousands):

	For the year ended December 31,
	2018			2017			2016
United States	$	(9,100	)	$	(11,382	)	$	(16,848	)
Loss from continuing operations before income taxes	$	(9,100	)	$	(11,382	)	$	(16,848	)

Schedule of Components of Benefits from Income Taxes

The following table shows the components of the provision for income taxes from continuing operations (in thousands):

	For the year ended December 31,
	2018		2017			2016
Current:
U.S. federal	$	—	$	—		$	1
State	11		10			26
Total current	$	11	$	10		$	27
Deferred:
U.S. Federal	$	—	$	(125	)	$	—
State	$	—	$	—		$	—
Total deferred	$	—	$	(125	)	$	—
Provision for income taxes	$	11	$	(115	)	$	27

Schedule of Effective Income Tax Rate Reconciliation

The principal items accounting for the difference between income taxes computed at the U.S. statutory rate and the provision for income taxes from continuing operations reflected in our Consolidated Statements of Operations are as follows:

	For the year ended December 31,
	2018		2017		2016
U.S. statutory rate	21.0	%	34.0	%	34.0	%
State taxes (net of federal tax benefit)	2.5		2.3		1.7
Valuation allowance	(25.0	)	17.4		(27.5	)
Deferred rate change due to changes in tax laws	—		(51.7	)	—
Other	1.4		(1.0	)	(8.4	)
	(0.1	)%	1.0	%	(0.2	)%

Schedule of Deferred Tax Assets

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets are as follows (in thousands):

	At December 31,
	2018			2017			2016
Allowance for doubtful accounts	$	—		$	—		$	18
Accrued expenses and other reserves	1,964			1,749			3,138
Tax credits, deferred R&D, and other	65			197			142
Net operating loss	10,793			8,610			9,239
Valuation allowance	(12,822		)	(10,556		)	(12,537		)
Net deferred tax assets	$	—		$	—		$	—