REVENUE AND MAJOR CUSTOMERS (Details) - USD ($)	3 Months Ended
	Jul. 03, 2021	Dec. 26, 2020	Jun. 27, 2020	Apr. 03, 2021
Revenue from External Customer [Line Items]
Remaining performance obligation, current	$ 136,400
Net revenues	431,172,000		$ 355,720,000
Contract with customer, liability	207,600,000			$ 213,800,000
Remaining performance obligation, noncurrent	71,200
Remaining performance obligation	207,600
Revenue recognized	47,600,000
Amortization of capitalized contract costs		$ 0
Headset
Revenue from External Customer [Line Items]
Net revenues	172,194,000		174,750,000
Product
Revenue from External Customer [Line Items]
Net revenues	371,203,000		291,458,000
Product | U.S.
Revenue from External Customer [Line Items]
Net revenues	175,970,000		144,289,000
Product | Europe, Middle East, and Africa
Revenue from External Customer [Line Items]
Net revenues	111,460,000		77,618,000
Product | Asia Pacific
Revenue from External Customer [Line Items]
Net revenues	58,270,000		45,431,000
Product | Americas, excluding U.S.
Revenue from External Customer [Line Items]
Net revenues	25,503,000		24,120,000
Product | Total international net product revenues
Revenue from External Customer [Line Items]
Net revenues	195,233,000		147,169,000
Voice
Revenue from External Customer [Line Items]
Net revenues	61,298,000		45,821,000
Video
Revenue from External Customer [Line Items]
Net revenues	137,711,000		70,887,000
Service
Revenue from External Customer [Line Items]
Net revenues	59,969,000		64,262,000
Service | U.S.
Revenue from External Customer [Line Items]
Net revenues	22,758,000		23,992,000
Service | Europe, Middle East, and Africa
Revenue from External Customer [Line Items]
Net revenues	14,661,000		16,488,000
Service | Asia Pacific
Revenue from External Customer [Line Items]
Net revenues	18,488,000		18,833,000
Service | Americas, excluding U.S.
Revenue from External Customer [Line Items]
Net revenues	4,062,000		4,949,000
Service | Total international net product revenues
Revenue from External Customer [Line Items]
Net revenues	$ 37,211,000		$ 40,270,000