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Balance sheet information
 3 Months Ended
Apr. 02, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Balance sheet information Balance sheet information
Cash, cash equivalents and restricted cash
A summary of cash and cash equivalents and restricted cash is as follows:
April 2, 2022December 31, 2021
Cash and cash equivalents$27,374 $43,933 
Restricted cash
Current5,280 5,280 
Noncurrent50,000 50,000 
$82,654 $99,213 
Current restricted cash consists of an escrow deposit with a financial institution for the purpose of paying a Paycheck Protection Program loan acquired as part of a business combination and noncurrent restricted cash consists of an escrow deposit with a financial institution for a potential future acquisition. Refer to Note 3. Acquisitions and investments for further information.
Accounts receivable, net
Accounts receivable, net are amounts billed and currently due from customers. The Company records the amounts due net of allowance for credit losses. Collection of the consideration that the Company expects to receive typically occurs within 30 to 90 days of billing. The Company applies the practical expedient for contracts with payment terms of one year or less which does not consider the effects of the time value of money. Occasionally, the Company enters into payment agreements with patients that allow payment terms beyond one year. In those cases, the financing component is not deemed significant to the contract.
Accounts receivable, net of allowances, consisted of the following as of:
April 2, 2022December 31, 2021
Accounts receivable$123,542 $128,365 
Less: Allowance for credit losses(4,254)(3,402)
$119,288 $124,963 
Due to the short-term nature of its receivables, the estimate of expected credit losses is based on aging of the account receivable balances. The allowance is adjusted on a specific identification basis for certain accounts as well as pooling of accounts with similar characteristics. The Company has a diverse customer base with no single customer representing ten percent of sales or accounts receivable. Historically, the Company’s reserves have been adequate to cover credit losses.
Changes in credit losses were as follows:
Three Months Ended
April 2, 2022April 3, 2021
Beginning balance$(3,402)$(3,990)
Provision(1,152)(191)
Write-offs369 406 
Recoveries(69)(36)
Ending balance$(4,254)$(3,811)
Inventory
Inventory consisted of the following as of:
April 2, 2022December 31, 2021
Raw materials and supplies$14,324 $12,213 
Finished goods51,669 50,805 
Gross65,993 63,018 
Excess and obsolete reserves(1,302)(1,330)
$64,691 $61,688 
Prepaid and other current assets
Prepaid and other current assets consisted of the following as of:
April 2, 2022December 31, 2021
Prepaid taxes$7,153 $12,236 
Prepaid and other current assets21,609 15,003 
$28,762 $27,239 
Accrued liabilities
Accrued liabilities consisted of the following as of:
April 2, 2022December 31, 2021
Gross-to-net deductions$66,665 $67,945 
Bonus and commission12,016 23,342 
Compensation and benefits10,202 10,665 
Income and other taxes15,736 8,139 
Other liabilities20,185 21,382 
$124,804 $131,473