Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income taxes [Abstract]

Components of Income Tax Expense (Benefit)

	Year Ended December 31,
	2016			2015
Current:
Federal	$	-		$	-
State		15			-
		15			-
Deferred
Federal		(4,119	)		3,302
State		(648	)		388
		(4,767	)		3,690
Valuation allowance		5,007			(3,571	)
Income tax expense	$	255		$	119

Computation of U.S. Federal Income Tax Rate to Pretax Loss from Continuing Operations

The difference between the actual income tax benefit and that computed by applying the U.S. federal income tax rate of 34% to pretax loss from continuing operations is summarized below:

	For the Years Ended December 31,
	2016			2015
Computed expected tax benefit	$	(1,047	)	$	(8,472	)
State tax benefit, net of federal effect		(499	)		(1,365	)
Warrant value fluctuation		(1,835	)		3,271
Net increase in valuation allowance		3,636			6,685
Provision for income taxes	$	255		$	119

Summary of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities as of December 31, 2016 and 2015 are as follows:

	December 31,
	2016			2015
Deferred tax assets/(liabilities):
Net operating loss carryforward	$	72,870		$	64,075
Capitalized research and developmental costs		8,711			10,543
Inventory		149			47
Reserves & accrued expenses		291			3,295
Convertible debt discount		(11,097	)		(11,182	)
Property & equipment		432			(355	)
Non-cash compensation		1,127			1,054
Goodwill		(359	)		(119	)
Total deferred tax assets		72,124			67,358
Less: valuation allowance		(72,483	)		(67,477	)
Net deferred tax assets/(liabilities)	$	(359	)	$	(119	)