Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2020
Jun. 26, 2020
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Jun. 25, 2020
Mar. 31, 2020
AOCI Attributable to Parent, Net of Tax                
Beginning balance   $ 233,666 $ 302,148 $ 290,785 $ 308,846 $ 308,176 $ 444,997 $ 487,750
Other comprehensive income (loss) before reclassifications $ 15   (3,309) 5,267 (2,047) 3,130 (402) (1,884)
Amounts reclassified from AOCI     (88) 9 9   270 48
Purchase accounting adjustments to eliminate Predecessor’s accumulated other comprehensive loss (income)   10,027            
Ending balance 308,176   313,532 302,148 290,785 307,221 233,666 444,997
Predecessors                
AOCI Attributable to Parent, Net of Tax                
Beginning balance   439,722            
Ending balance             439,722  
Total Accumulated Other Comprehensive Income (Loss)                
AOCI Attributable to Parent, Net of Tax                
Beginning balance 0 0 11,843 6,567 8,605 15 (9,895) (8,059)
Ending balance 15 0 8,446 11,843 6,567 3,145 0 (9,895)
Total Accumulated Other Comprehensive Income (Loss) | Predecessors                
AOCI Attributable to Parent, Net of Tax                
Beginning balance   (10,027)            
Ending balance             (10,027)  
Net Currency Translation Gains (Losses)                
AOCI Attributable to Parent, Net of Tax                
Beginning balance 0   11,049 5,727 7,774 15 1,001 2,885
Other comprehensive income (loss) before reclassifications 15   (3,599) 5,322 (2,047) 3,130 (402) (1,884)
Amounts reclassified from AOCI     0 0 0   0 0
Purchase accounting adjustments to eliminate Predecessor’s accumulated other comprehensive loss (income)   (599)            
Ending balance 15 0 7,450 11,049 5,727 3,145   1,001
Net Currency Translation Gains (Losses) | Predecessors                
AOCI Attributable to Parent, Net of Tax                
Beginning balance   599            
Ending balance             599  
Funded Status of Benefit Plans                
AOCI Attributable to Parent, Net of Tax                
Beginning balance 0   794 840 831 0 (10,896) (10,944)
Other comprehensive income (loss) before reclassifications 0   290 (55) 0 0 0 0
Amounts reclassified from AOCI     (88) 9 9   270 48
Purchase accounting adjustments to eliminate Predecessor’s accumulated other comprehensive loss (income)   10,626            
Ending balance $ 0 0 $ 996 $ 794 $ 840 $ 0   $ (10,896)
Funded Status of Benefit Plans | Predecessors                
AOCI Attributable to Parent, Net of Tax                
Beginning balance   $ (10,626)            
Ending balance             $ (10,626)