Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current [Abstract]
Federal		$ 64	$ 0
State		11	15
Current income taxes		75	15
Deferred [Abstract]
Federal		(24)	178
State		78	62
Deferred income tax		54	240
Income tax expense		$ 129	255
Income Tax Disclosure [Line Items]
Federal corporate 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		$ (6,359)	(1,047)
State tax benefit, net of federal effect		(1,113)	(499)
Warrant value fluctuation		(34)	(1,835)
Tax Cuts and Jobs Act impact		23,834	0
Net (decrease) increase in valuation allowance		(16,199)	3,636
Income tax expense		129	255
Deferred tax assets/(liabilities) [Abstract]
Net operating loss carryforward		50,472	72,870
Intangible assets		4,595	8,711
Inventory		66	149
Reserves & accrued expenses		228	291
Convertible debt discount		0	(11,097)
Property & equipment		130	432
Non-cash compensation		793	1,127
Goodwill		(414)	(359)
Total deferred tax assets		55,870	72,124
Less: valuation allowance		(56,284)	(72,483)
Net deferred tax assets/(liabilities)		(414)	(359)
Valuation allowance - Deferred tax asset change in amount		(16,199)
Federal operating loss carryforwards, net		$ 181,413	$ 183,658
Earliest open tax year subject to examination		2014
Maximum [Member]
Income Tax Disclosure [Line Items]
Federal corporate tax rate		35.00%
Plan [Member]
Income Tax Disclosure [Line Items]
Federal corporate tax rate	21.00%