Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Current [Abstract]
Federal	$ 0	$ 0
State	15	0
Current income taxes	15	0
Deferred [Abstract]
Federal	(4,119)	3,302
State	(648)	388
Deferred income tax	(4,767)	3,690
Valuation allowance	5,007	(3,571)
Income tax expense	$ 255	119
Effective income tax rate	34.00%
Difference between income tax benefit and U.S. federal income tax rate to pretax loss from continuing operations [Abstract]
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
Income tax expense	255	119
Deferred tax assets/(liabilities) [Abstract]
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
Property & equipment		(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)
Valuation allowance - Deferred tax asset change in amount	5,035	(3,571)
Federal operating loss carryforwards, net	$ 183,727	$ 163,837
Earliest open tax year subject to examination	2011