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Product Revenue (Tables)
 3 Months Ended
Mar. 31, 2024
Revenue from Contract with Customer [Abstract]  
Schedule of Product Revenue, Net
Product revenue, net, were as follows:
Three Months Ended March 31,
(In thousands)20242023
Product revenue, net$8,189 $5,609 
Schedule of Product Revenue Allowance and Reserve
The following table summarizes balances and activity in each of the product revenue allowance and reserve categories for the three months ended March 31, 2024:
(In thousands)Contractual AdjustmentsGovernment RebatesReturns/ ReplacementTotal
Balance at December 31, 2023$156 $1,084 $232 $1,472 
Current provisions relating to sales in the current year511 616 93 1,220 
Adjustments relating to prior years(40)— 40 — 
Payments/returns relating to sales in the current year(427)— — (427)
Payments/returns relating to sales in the prior years(79)(306)— (385)
Balance at March 31, 2024$121 $1,394 $365 $1,880 
Schedule of Revenue-related Reserves
Total revenue-related reserves above, included in our condensed consolidated balance sheets, are summarized as follows:
(In thousands)March 31, 2024December 31, 2023
Reduction of accounts receivable$115 $151 
Component of accrued expenses 1,765 1,321 
Total revenue-related reserves$1,880 $1,472 
Schedule of Changes in Contract Assets
The following table presents changes in our contract assets during the three months ended March 31, 2024:
(In thousands)December 31, 2023AdditionsDeductionsMarch 31, 2024
Contract assets(1)
Accounts receivable, net$2,810 $9,409 $(8,766)$3,453 
(1) Additions to contract assets relate to amounts billed to Customers for product sales and deductions to contract assets primarily relate to collection of receivables during the reporting period.