Income Taxes - Schedule of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Accounts receivable	$ 48	$ 36
Employee compensation and benefits	61	100
Contingent consideration	(106)	(169)
Amortization	1,445	1,305
Deferred acquisition costs	212	245
NOL and tax credit carryforwards	24,064	34,807
Warranty accrual	0	18
Other, net	27	60
Deferred tax assets (liabilities), net	25,751	36,402
Less valuation allowance	(25,779)	(36,421)
Net deferred tax assets (liabilities)	$ (28)	$ (19)