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STOCK - BASED COMPENSATION - Narrative (Details) $ / shares in Units, $ in Thousands				1 Months Ended	3 Months Ended
	Jan. 01, 2023 shares	Nov. 23, 2021 performance_based_milestone_target shares	Sep. 07, 2021 milestone shares	Oct. 31, 2021 shares	Mar. 26, 2023 USD ($) $ / shares shares	Mar. 27, 2022 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation | $					$ 14,265	$ 22,165
Weighted average grant date fair value of options (in dollars per share) | $ / shares					$ 8.43	$ 11.16
Performance based milestone targets | milestone			3
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation | $					$ 2,472	$ 2,532
Unrecognized compensation expense | $					$ 21,600
Expected period for recognition					2 years 4 months 13 days
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation | $					$ 9,048	9,049
Unrecognized compensation expense | $					$ 51,500
Expected period for recognition					1 year 8 months 23 days
Shares granted (in shares)				6,300,000	0
New shares issued (in shares)		321,428
Performance based milestone targets | performance_based_milestone_target		3
PSUs | Founder One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)				2,100,000
PSUs | Founder Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)				2,100,000
PSUs | Founder Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)				2,100,000
PSUs | Spyce
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation | $					$ 800
Unrecognized compensation expense | $					9,800
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation | $					2,745	$ 10,584
Unrecognized compensation expense | $					$ 21,000
Expected period for recognition					1 year 9 months 21 days
Shares granted (in shares)					214,431	235,972
Fair value of shares earned | $					$ 1,600
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock authorized for issuance (in shares)					35,166,753
Maximum number of new common stock authorized for issuance (in shares)					11,500,000
2021 Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual life					10 years
2021 Plan | Minimum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					12 months
2021 Plan | Maximum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					4 years
2009 Stock Plan And 2019 Equity Incentive Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual life					10 years
2009 Stock Plan And 2019 Equity Incentive Plan | Minimum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					1 year
2009 Stock Plan And 2019 Equity Incentive Plan | Maximum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					4 years
ESPP | Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock authorized for issuance (in shares)	4,111,331		3,000,000
Common stock reserved, issuance, increase period					10 years
Percentage of outstanding stock maximum					1.00%
Maximum shares allowable under the plan (in shares)					4,300,000
New shares available (in shares)	1,111,331

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