STOCK-BASED COMPENSATION - Changes in Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
Sep. 25, 2024
Shares
Outstanding-beginning balance (shares)	843,320
Grants (shares)	556,958
Exercised (shares)	(163,696)
Forfeited, cancelled or expired (shares)	(159,777)
Outstanding-ending balance (shares)	1,076,805
Vested and expected to vest at end of period (shares)	1,061,620
Exercisable at end of period (shares)	270,435
Weighted-Average Exercise Price
Outstanding-beginning balance (usd per share)	$ 10.13
Grants (usd per share)	10.48
Exercised (usd per share)	9.50
Forfeited, cancelled or expired (usd per share)	10.66
Outstanding-ending balance (usd per share)	10.33
Vested and expected to vest at end of period (usd per share)	10.33
Exercisable at end of period (usd per share)	$ 11.20
Weighted-Average Contractual Life (Years)
Outstanding contractual life (years)	7 years 11 months 4 days
Vested and expected to vest contractual life (years)	7 years 10 months 24 days
Exercisable contractual life (years)	3 years 7 months 24 days
Aggregate Intrinsic Value
Outstanding	$ 3,666
Vested and expected to vest	3,613
Exercisable	$ 732

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of share options (or share units) exercised during the current period.

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