Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2019

Revenue Recognition [Abstract]

Disaggregation of Revenue

	Three months ended June 30, 2019						Six months ended June 30, 2019
	Services Revenues		Products Revenue		Total Revenue		Services Revenues		Products Revenue		Total Revenue
Timing of revenue recognition:
Products and services transferred over time	$	4,144,000	$	-	$	4,144,000	$	7,699,000	$	-	$	7,699,000
Products and services transferred at a point in time		1,291,000		407,000		1,698,000		2,375,000		908,000		3,283,000
Total	$	5,435,000	$	407,000	$	5,842,000	$	10,074,000	$	908,000	$	10,982,000

	Three months ended June 30, 2018						Six months ended June 30, 2018
	Services Revenues		Products Revenue		Total Revenue		Services Revenues		Products Revenue		Total Revenue
Timing of revenue recognition:
Products and services transferred over time	$	7,868,000	$	-	$	7,868,000	$	14,894,000	$	-	$	14,894,000
Products and services transferred at a point in time		-		377,000		377,000		-		770,000		770,000
Total	$	7,868,000	$	377,000	$	8,245,000	$	14,894,000	$	770,000	$	15,664,000

Schedule of Changes in Deferred Revenue

Balance at December 31, 2018	$	302,000
Reclassification of beginning deferred revenue to revenue, as a result of performance obligations satisfied		(301,000	)
Cash received in advance and not recognized as revenue		435,000
Balance at June 30, 2019	$	436,000