REVENUE RECOGNITION (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2021

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenues

For the Services & Support segment, we analyze revenue by customer group and type, which is as follows for the three and nine months ended September 30, 2021 and 2020:

	Services & Support Revenue by Customer Group
	Three Months Ended September 30				Nine Months Ended September 30
		2021		2020		2021		2020
Financial	$	482,000	$	117,000	$	1,306,000	$	314,000
Healthcare		261,000		244,000		760,000		674,000
Education		64,000		2,312,000		212,000		3,031,000
Other commercial clients		1,021,000		682,000		3,035,000		1,302,000
CSI IT operations		119,000		175,000		406,000		561,000
	$	1,947,000	$	3,530,000	$	5,719,000	$	5,882,000

	Services & Support Revenue by Type
	Three Months Ended September 30				Nine Months Ended September 30
		2021		2020		2021		2020
Project & product revenue	$	297,000	$	2,611,000	$	927,000	$	3,498,000
Services & support revenue		1,650,000		919,000		4,792,000		2,384,000
	$	1,947,000	$	3,530,000	$	5,719,000	$	5,882,000

For the Electronics & Software segment, we analyze revenue by region and product group, which is as follows for the years ended December 31, 2020 and 2019:

	Electronics & Software Revenue by Region
	2020		2019
North America	$	29,721,000	$	39,771,000
International		4,775,000		7,236,000
	$	34,496,000	$	47,007,000

	Electronics & Software Revenue by Product Group
	2020		2019
Intelligent edge solutions	$	12,162,000	$	18,442,000
Traditional products		22,334,000		28,565,000
	$	34,496,000	$	47,007,000

For the Services & Support segment, we analyze revenue by customer group and type, which is as follows for the years ended December 31, 2020 and 2019:

	Services & Support Revenue by Customer Group
	2020		2019
Education	$	4,483,000	$	1,926,000
Healthcare		887,000		705,000
Financial and other commercial clients		2,708,000		1,268,000
CSI IT operations		699,000		842,000
	$	8,777,000	$	4,741,000

	Services & Support Revenue by Type
	2020		2019
Project & product revenue	$	5,120,000	$	2,242,000
Services & support revenue		3,657,000		2,499,000
	$	8,777,000	$	4,741,000