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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock Plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 25, 2021 | Sep. 26, 2020 | Sep. 25, 2021 | Sep. 26, 2020
Stock Option Plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Shares of common stock available for issuance (in shares) | 453,718 |  | 453,718 |
Award vesting period |  |  | 3 years |
Compensation expense | $ 8,947 | $ 3,065 | $ 17,895 | $ 8,736
Income tax benefits | $ 2,237 | $ 766 | $ 4,474 | $ 2,184
Stock Option Plans | Minimum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Expiration period for grant |  |  | 7 years |
Stock Option Plans | Maximum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Expiration period for grant |  |  | 10 years |
Restricted Stock Units (RSUs) |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Award vesting period |  |  | 3 years |
Restricted Shares |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Award vesting period | 4 years |  |  |
Restricted shares granted (in shares) | 143,859 |  |  |
Restricted shares granted, value | $ 38,000 |  |  |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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