Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Inventory reserve	$ 65	$ 39
Contract retentions	1,704	1,065
Allowances for doubtful accounts	214	208
Advertising costs	$ 384	$ 404