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FAIR VALUE MEASUREMENT (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 29, 2024 | Dec. 31, 2023 | Dec. 25, 2022 | May 26, 2024 | Mar. 27, 2023 | Dec. 26, 2021
Total Fair Value |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Cash and cash equivalents | $ 22,536 | $ 61,885 |  |  |  |
Total Fair Value | Restricted Assets |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted cash and cash equivalents | 38,564 | 37,421 |  |  |  |
Cash, cash equivalents and restricted cash | 61,100 | 99,306 |  |  |  |
Restricted investments classified as held-to-maturity | 98,592 | 120,913 |  |  |  |
Total Fair Value | Restricted Assets | Municipal debt securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 22,355 | 31,804 |  |  |  |
Total Fair Value | Restricted Assets | Corporate debt securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 63,512 | 74,912 |  |  |  |
Total Fair Value | Restricted Assets | Agency mortgage-backed securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 11,754 | 13,235 |  |  |  |
Total Fair Value | Restricted Assets | U.S. government and agency securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 971 | 962 |  |  |  |
Cash, cash equivalents and restricted cash | 61,100 | 99,306 | $ 135,631 |  |  | $ 103,185
Restricted investments classified as held-to-maturity | 98,592 | 120,913 |  |  |  |
Goodwill | 24,543 | 84,114 | 93,784 |  |  |
Goodwill, impairment charge | (59,074) | (8,885) | 0 |  |  |
Indefinite-lived trade name/trademarks | $ 4,800 | $ 5,400 |  |  |  |
Impairment charge |  |  | 0 |  |  |
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] | Goodwill and intangible asset impairment charge | Goodwill and intangible asset impairment charge |  |  |  |
Goodwill and intangible asset impairment charge | $ 59,674 | $ 9,485 | 0 |  |  |
PeopleScout MSP |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Goodwill |  | 800 |  |  | $ 9,700 |
Goodwill, impairment charge |  | (8,900) |  |  |  |
PeopleReady |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | $ 59,100 |  |
Goodwill, impairment charge | (59,100) |  |  |  |  |
PeopleScout |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Goodwill | 23,052 | 23,549 | 32,199 |  |  |
Goodwill, impairment charge | 0 | (8,885) |  |  |  |
Indefinite-lived trade name/trademarks | 2,100 |  |  |  |  |
PeopleManagement |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Goodwill | 1,491 | 1,491 | $ 1,491 |  |  |
Goodwill, impairment charge | 0 | 0 |  |  |  |
Indefinite-lived trade name/trademarks | 2,700 | 3,300 |  |  | $ 3,900 |
Impairment charge | (600) | (600) |  |  |  |
Municipal debt securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 22,355 | 31,804 |  |  |  |
Corporate debt securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 63,512 | 74,912 |  |  |  |
Agency mortgage-backed securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 11,754 | 13,235 |  |  |  |
U.S. government and agency securities |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 971 | 962 |  |  |  |
Restricted Assets | Quoted prices in active markets for identical assets (level 1) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Cash, cash equivalents and restricted cash | 61,100 | 99,306 |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Restricted Assets | Significant other observable inputs (level 2) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Cash, cash equivalents and restricted cash | 0 | 0 |  |  |  |
Restricted investments classified as held-to-maturity | 98,592 | 120,913 |  |  |  |
Restricted Assets | Significant unobservable inputs (level 3) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Cash, cash equivalents and restricted cash | 0 | 0 |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Quoted prices in active markets for identical assets (level 1) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Cash and cash equivalents | 22,536 | 61,885 |  |  |  |
Fair Value, Recurring | Significant other observable inputs (level 2) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Cash and cash equivalents | 0 | 0 |  |  |  |
Fair Value, Recurring | Significant unobservable inputs (level 3) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Cash and cash equivalents | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Quoted prices in active markets for identical assets (level 1) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted cash and cash equivalents | 38,564 | 37,421 |  |  |  |
Fair Value, Recurring | Restricted Assets | Significant other observable inputs (level 2) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted cash and cash equivalents | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Significant unobservable inputs (level 3) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted cash and cash equivalents | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Municipal debt securities | Quoted prices in active markets for identical assets (level 1) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Municipal debt securities | Significant other observable inputs (level 2) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 22,355 | 31,804 |  |  |  |
Fair Value, Recurring | Restricted Assets | Municipal debt securities | Significant unobservable inputs (level 3) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Corporate debt securities | Quoted prices in active markets for identical assets (level 1) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Corporate debt securities | Significant other observable inputs (level 2) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 63,512 | 74,912 |  |  |  |
Fair Value, Recurring | Restricted Assets | Corporate debt securities | Significant unobservable inputs (level 3) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Agency mortgage-backed securities | Quoted prices in active markets for identical assets (level 1) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | Agency mortgage-backed securities | Significant other observable inputs (level 2) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 11,754 | 13,235 |  |  |  |
Fair Value, Recurring | Restricted Assets | Agency mortgage-backed securities | Significant unobservable inputs (level 3) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | U.S. government and agency securities | Quoted prices in active markets for identical assets (level 1) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 0 | 0 |  |  |  |
Fair Value, Recurring | Restricted Assets | U.S. government and agency securities | Significant other observable inputs (level 2) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | 971 | 962 |  |  |  |
Fair Value, Recurring | Restricted Assets | U.S. government and agency securities | Significant unobservable inputs (level 3) |  |  |  |  |  |
Fair Value Measurement [Line Items] |  |  |  |  |  |
Restricted investments classified as held-to-maturity | $ 0 | $ 0 |  |  |  |

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