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SEGMENT INFORMATION - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2025	Jun. 28, 2024	Jun. 27, 2025	Jun. 28, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 138,027	$ 138,740	$ 271,162	$ 260,800
Appliance and integration
Segment Reporting Information [Line Items]
Total revenue	94,067	94,184	185,608	175,779
Product sales
Segment Reporting Information [Line Items]
Total revenue	84,470	87,441	172,540	161,357
Professional services
Segment Reporting Information [Line Items]
Total revenue	9,597	6,743	13,068	14,422
SaaS and service
Segment Reporting Information [Line Items]
Total revenue	43,960	44,556	85,554	85,021
SaaS
Segment Reporting Information [Line Items]
Total revenue	15,445	14,023	30,212	26,887
Support services
Segment Reporting Information [Line Items]
Total revenue	$ 28,515	$ 30,533	$ 55,342	$ 58,134

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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