SEGMENT INFORMATION - Summary of Total Revenues Disaggregated by Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Sep. 29, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 127,203	$ 155,738	$ 440,815	$ 460,623
Appliance and integration
Segment Reporting Information [Line Items]
Total revenue	84,760	116,441	310,681	351,293
Product sales
Segment Reporting Information [Line Items]
Total revenue	76,133	105,602	283,551	313,390
Professional services
Segment Reporting Information [Line Items]
Total revenue	8,627	10,839	27,130	37,903
SaaS and service
Segment Reporting Information [Line Items]
Total revenue	42,443	39,297	130,134	109,330
SaaS
Segment Reporting Information [Line Items]
Total revenue	12,540	8,862	37,707	24,168
Support services
Segment Reporting Information [Line Items]
Total revenue	$ 29,903	$ 30,435	$ 92,427	$ 85,162