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WORKERS' COMPENSATION INSURANCE AND RESERVES (Tables)
 3 Months Ended
Mar. 31, 2019
Workers' Compensation Insurance and Reserves [Abstract]  
Reconciliation of workers' compensation claims reserve
The following table presents a reconciliation of the undiscounted workers’ compensation reserve to the discounted workers’ compensation reserve for the periods presented:
(in thousands)
March 31,
2019
December 30,
2018
Undiscounted workers’ compensation reserve
$
280,385

$
284,625

Less discount on workers’ compensation reserve
18,319

18,179

Workers’ compensation reserve, net of discount
262,066

266,446

Less current portion
74,073

76,421

Long-term portion
$
187,993

$
190,025