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Income Taxes - Net Deferred Tax Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Accrued expenses $ 715 $ 1,016
Provision for excess and obsolete inventory 759 466
Capitalized research and experimental expenditures 8,986 0
Convertible debt 9,782 9,804
Interest expense limitation 12,722 11,113
Net operating loss and tax credit carryforwards 112,297 110,463
Share-based compensation 3,375 2,562
Right-of-use-asset 2,294 1,765
Unrecognized tax benefits 1,942 1,567
Deferred tax assets 152,872 138,756
Valuation allowances (145,431) (132,132)
Deferred Tax Assets, Net of Valuation Allowance 7,441 6,624
Deferred tax liabilities:    
Operating lease liability (2,518) (1,830)
Acquired intangible assets (599) (666)
Depreciation and amortization (4,288) (4,376)
Unrealized foreign currency gains (359) (604)
Deferred tax liabilities (7,764) (7,476)
Deferred tax liabilities, net $ (323) $ (852)