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SUPPLEMENTAL BALANCE SHEET INFORMATION
 9 Months Ended
Sep. 26, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
SUPPLEMENTAL BALANCE SHEET INFORMATION SUPPLEMENTAL BALANCE SHEET INFORMATION
Accounts receivable allowance for credit losses
The activity related to the accounts receivable allowance for credit losses was as follows:
Thirty-nine weeks ended
(in thousands)September 26,
2021		September 27,
2020
Beginning balance$2,921 $4,288 
Cumulative-effect adjustment (1)— 524 
Current period provision2,881 6,582 
Write-offs(1,827)(5,925)
Foreign currency translation(11)(22)
Ending balance$3,964 $5,447 
(1)As a result of our adoption of the accounting standard for credit losses, we recognized a cumulative-effect adjustment to our accounts receivable allowance for credit losses of $0.5 million as of the beginning of the first quarter of 2020.
Prepaid expenses and other current assets
(in thousands)September 26,
2021		December 27,
2020
Prepaid software agreements$8,107 $8,643 
Other prepaid expenses9,825 8,631 
Other current assets9,226 8,863 
Prepaid expenses and other current assets$27,158 $26,137 
Other current liabilities
(in thousands)September 26,
2021		December 27,
2020
Deferred revenue$6,483 $1,167 
Other current liabilities6,139 6,751 
Other current liabilities$12,622 $7,918