Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Current [Abstract]
Federal											$ 0	$ 64
State											39	11
Current income tax											39	75
Deferred [Abstract]
Federal											(282)	(24)
State											(21)	78
Deferred income tax											(303)	54
Income tax (benefit) expense	$ (80)	$ 40	$ 40	$ 38	$ 73	$ 70	$ 80	$ 143	$ 0	$ 181	$ (264)	$ 129
Federal corporate tax rate											21.00%	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											$ (902)	$ (7,271)
State tax expense (benefit), net of federal effect											688	(1,112)
Warrant value fluctuation											43	(202)
Tax Cuts and Jobs Act impact											0	23,933
Cancellation of debt											0	1,089
Other											79	125
Net decrease in valuation allowance											(172)	(16,433)
Income tax (benefit) expense	$ (80)	$ 40	$ 40	$ 38	$ 73	$ 70	$ 80	$ 143	$ 0	$ 181	(264)	129
Deferred tax assets/(liabilities) [Abstract]
Net operating loss carryforward											42,283	40,723
Intangible assets											3,340	4,595
Inventory											50	66
Reserves & accrued expenses											884	571
Property & equipment											(64)	130
Non-cash compensation											620	793
Goodwill											(518)	(414)
Total net deferred tax assets											46,595	46,464
Less: valuation allowance											(46,706)	(46,878)
Net deferred tax assets/(liabilities)											(111)	(414)
Valuation allowance - Deferred tax asset change in amount											(172)	(16,433)
Federal operating loss carryforwards, net											$ 187,229	$ 181,033
Earliest open tax year subject to examination											2015