ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES - DISAGGREGATED REVENUE (Details) - USD ($)		3 Months Ended		9 Months Ended
	Jan. 31, 2018	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue
Revenue	$ 250,000	$ 68,736,000	$ 61,008,000	$ 178,967,000	$ 141,186,000
Product revenues | Hardware
Disaggregation of Revenue
Revenue		64,601,000	57,400,000	167,967,000	131,865,000
Product revenues | Software
Disaggregation of Revenue
Revenue		906,000	1,395,000	3,959,000	3,445,000
Service revenues | Professional services
Disaggregation of Revenue
Revenue		1,359,000	534,000	2,192,000	1,103,000
Service revenues | Maintenance and subscription services
Disaggregation of Revenue
Revenue		$ 1,870,000	$ 1,679,000	4,849,000	$ 4,773,000
Bill and hold arrangements
Disaggregation of Revenue
Revenue				$ 5,300,000