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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Summary of Loss before Income Taxes
The Company’s loss before income taxes for the years ended December 31, 2023 and 2022 is comprised of the following (in thousands):
 Year Ended December 31,
 20232022
Domestic$(47,703)$(63,939)
Foreign2,403 (4,495)
Loss before income taxes$(45,300)$(68,434)
Summary of Provision for Income Taxes
The (benefit) provision for income taxes for the years ended December 31, 2023 and 2022 is comprised of the following (in thousands):
 Year Ended December 31,
 20232022
Current:
Federal$— $— 
State20 50 
Foreign477 55 
Total current497 105 
Deferred:
Federal15 
State— — 
Foreign379 (585)
Total deferred388 (570)
(Benefit) Provision for income taxes$885 $(465)
Summary of Net Deferred Tax Assets
The Company’s net deferred tax liabilities consist of the following (in thousands):
 December 31,
 20232022
Deferred tax assets:
Accrued expenses$1,175 $715 
Provision for excess and obsolete inventory4,679 759 
Capitalized research and experimental expenditures8,629 8,986 
Convertible debt3,526 9,782 
Depreciation and amortization1,725 — 
Interest expense limitation18,689 12,722 
Net operating loss and tax credit carryforwards114,813 112,297 
Share-based compensation3,065 3,375 
Right-of-use-asset2,209 2,294 
Unrecognized tax benefits— 1,942 
Deferred tax assets158,510 152,872 
Valuation allowances(155,158)(145,431)
Deferred tax assets, net of valuation allowances3,352 7,441 
Deferred tax liabilities:
Operating lease liability(2,607)(2,518)
Acquired intangible assets(555)(599)
Depreciation and amortization— (4,288)
Unrealized foreign currency gains(870)(359)
Deferred tax liabilities(4,032)(7,764)
Deferred tax liabilities, net$(680)$(323)
Summary of Provision for Income Taxes Reconciles to Amount Computed by Applying Statutory Federal Income Tax Rate
The (benefit) provision for income taxes reconciles to the amount computed by applying the statutory federal income tax rate of 21% in 2023 and 2022 to loss before income taxes as follows (in thousands):
 Year Ended December 31,
 20232022
Federal tax benefit, at statutory rate$(9,154)$(14,371)
State benefit, net of federal benefit711 (370)
Foreign tax rate difference148 (259)
Valuation allowance against future tax benefits9,727 13,564 
Research and development credits(760)(2,222)
Share-based compensation1,622 1,010 
Non-deductible officers compensation— 108 
True-up of prior year provisions(1,474)2,123 
Other65 (48)
(Benefit) Provision for income taxes$885 $(465)
Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits
A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):
Balance at December 31, 2021$41,629 
Increases related to current and prior year tax positions1,286 
Balance at December 31, 202242,915 
Increases related to current and prior year tax positions506 
Decreases from lapses of statute of limitations and prior year tax positions(30,782)
Balance at December 31, 2023$12,639