Other Current Liabilities

6 Months Ended

Jul. 01, 2022

Accrued Liabilities, Current [Abstract]

Components of other current liabilities were as follows (in thousands):


	July 1, 2022		December 31, 2021
Accrued self-insurance retentions	$	9,553	$	9,303
Accrued warranty and service liabilities	14,188		14,463
Accrued trade promotions	12,762		15,872
Payable for employee stock purchases	8,767		15,746
Customer advances and deferred revenue	69,222		60,554
Income taxes payable	12,975		5,200
Right of return refund liability	18,556		18,614
Operating lease liabilities, current	9,384		9,096

Other	38,685		42,311
Total	$	194,092	$	191,159

A liability is established for estimated future warranty and service claims that relate to current and prior period sales. The Company estimates warranty costs based on historical claim experience and other factors including evaluating specific product warranty issues. Following is a summary of activity in accrued warranty and service liabilities (in thousands):


Balance, December 31, 2021	$	14,463
Assumed in business acquisition	38
Charged to expense	3,807
Margin on parts sales reversed	1,335
Reductions for claims settled	(5,455)
Balance, July 1, 2022	$	14,188

Customer Advances and Deferred Revenue

Revenue is deferred when cash payments are received or due in advance of performance, including amounts which are refundable. This is also the case for services associated with certain product sales. During the three and six months ended July 1, 2022, we recognized $18.3 million and $40.8 million, respectively, that was included in deferred revenue at December 31, 2021. During the three and six months ended June 25, 2021, we recognized $6.6 million and $24.0 million, respectively, that was included in deferred revenue at December 25, 2020.