Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2021

Revenue Recognition

Deferred revenue

Balance at December 31, 2020	$	180,000
Reclassification of beginning deferred revenue to revenue, as a result of performance obligations satisfied		(148,000	)
Cash received in advance and not recognized as revenue		179,000
Balance at September 30, 2021	$	211,000

Disaggregation of revenue

	Three months ended September 30, 2021						Nine months ended September 30, 2021
	Services Revenues		Products Revenue		Total Revenue		Services Revenues		Products Revenue		Total Revenue
Timing of revenue recognition:
Products and services transferred over time	$	1,482,000	$	-	$	1,482,000	$	5,366,000	$	-	$	5,366,000
Products and services transferred at a point in time		2,011,000		-		2,011,000		9,609,000		-		9,609,000
Total	$	3,493,000	$	-	$	3,493,000	$	14,975,000	$	-	$	14,975,000
	Three months ended September 30, 2020						Nine months ended September 30, 2020
	Services Revenues		Products Revenue		Total Revenue		Services Revenues		Products Revenue		Total Revenue
Timing of revenue recognition:
Products and services transferred over time	$	2,024,000	$	-	$	2,024,000	$	7,366,000	$	-	$	7,366,000
Products and services transferred at a point in time		2,293,000		118,000		2,411,000		4,484,000		578,000		5,062,000
Total	$	4,317,000	$	118,000	$	4,435,000	$	11,850,000	$	578,000	$	12,428,000