XML 41 R31.htm IDEA: XBRL DOCUMENT v3.23.3
RESTRICTED CASH AND INVESTMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 24, 2023
Sep. 25, 2022
Sep. 24, 2023
Sep. 25, 2022
Dec. 25, 2022
Restricted Cash and Investments [Line Items]          
Cash collateral held by insurance carriers $ 24,727   $ 24,727   $ 29,567
Cash and cash equivalents held in Trust 17,842   17,842   30,857
Investments held in Trust 125,379   125,379   123,678
Company owned life insurance policies 30,005   30,005   26,479
Other restricted cash and cash equivalents 876   876   3,153
Restricted cash and investments 198,829   198,829   213,734
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]          
Amortized cost of held-to-maturity investments 125,379   125,379   123,678
Gross unrealized gains 0   0   6
Gross unrealized losses (4,329)   (4,329)   (4,159)
Fair value 121,050   121,050   119,525
Held-to-maturity securities, amortized cost [Abstract]          
Amortized cost of held-to-maturity investments 125,379   125,379   123,678
Held-to-maturity securities, fair value [Abstract]          
Fair value 121,050   121,050   119,525
Proceeds from company-owned life insurance 1,700   1,662 $ 0  
Proceeds from company-owned life insurance, amount in excess of cash surrender value 1,400   1,400    
Unrealized gains (losses) on Investments (493) $ (1,516) 1,482 $ (7,076)  
Municipal debt securities          
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]          
Amortized cost of held-to-maturity investments 34,783   34,783   42,892
Gross unrealized gains 0   0   2
Gross unrealized losses (717)   (717)   (463)
Fair value 34,066   34,066   42,431
Held-to-maturity securities, amortized cost [Abstract]          
Amortized cost of held-to-maturity investments 34,783   34,783   42,892
Held-to-maturity securities, fair value [Abstract]          
Fair value 34,066   34,066   42,431
Corporate debt securities          
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]          
Amortized cost of held-to-maturity investments 80,759   80,759   79,736
Gross unrealized gains 0   0   4
Gross unrealized losses (3,458)   (3,458)   (3,643)
Fair value 77,301   77,301   76,097
Held-to-maturity securities, amortized cost [Abstract]          
Amortized cost of held-to-maturity investments 80,759   80,759   79,736
Held-to-maturity securities, fair value [Abstract]          
Fair value 77,301   77,301   76,097
Agency mortgage-backed securities          
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]          
Amortized cost of held-to-maturity investments 8,839   8,839   50
Gross unrealized gains 0   0   0
Gross unrealized losses (88)   (88)   (2)
Fair value 8,751   8,751   48
Held-to-maturity securities, amortized cost [Abstract]          
Amortized cost of held-to-maturity investments 8,839   8,839   50
Held-to-maturity securities, fair value [Abstract]          
Fair value 8,751   8,751   48
U.S. government and agency securities          
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]          
Amortized cost of held-to-maturity investments 998   998   1,000
Gross unrealized gains 0   0   0
Gross unrealized losses (66)   (66)   (51)
Fair value 932   932   949
Held-to-maturity securities, amortized cost [Abstract]          
Amortized cost of held-to-maturity investments 998   998   1,000
Held-to-maturity securities, fair value [Abstract]          
Fair value 932   932   $ 949
Restricted cash and investments          
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]          
Amortized cost of held-to-maturity investments 125,379   125,379    
Fair value 121,050   121,050    
Held-to-maturity securities, amortized cost [Abstract]          
Due in one year or less 32,068   32,068    
Due after one year through five years 85,528   85,528    
Due after five years through ten years 7,783   7,783    
Amortized cost of held-to-maturity investments 125,379   125,379    
Held-to-maturity securities, fair value [Abstract]          
Due in one year or less 31,617   31,617    
Due after one year through five years 81,848   81,848    
Due after five years through ten years 7,585   7,585    
Fair value $ 121,050   $ 121,050