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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Summary of Loss before Income Taxes

The Company’s loss before income taxes for the years ended December 31, 2021, 2020 and 2019 is comprised of the following (in thousands):

			Year Ended December 31,
			2021						2020						2019
Domestic			$	(40,897)					$	(109,837)					$	(39,187)
Foreign			(6,823)						(601)						(387)
Loss before income taxes			$	(47,720)					$	(110,438)					$	(39,574)

Summary of Provision for Income Taxes

The provision for income taxes for the years ended December 31, 2021, 2020 and 2019 is comprised of the following (in thousands):

			Year Ended December 31,
			2021						2020						2019
Current:
Federal			$	—					$	—					$	(49)
State			30						(4)						35
Foreign			214						93						1,148
Total current			244						89						1,134
Deferred:
Federal			12						12						12
State			—						—
Foreign			(65)						647						(610)
Total deferred			(53)						659						(598)
Provision for income taxes			$	191					$	748					$	536

Summary of Net Deferred Tax Assets

The Company’s net deferred tax liabilities consist of the following (in thousands):

			December 31,
			2021						2020
Deferred tax assets:
Accrued expenses			$	1,016					$	1,940
Provision for excess and obsolete inventory			466						2,016
Convertible debt			9,804						13,367
Interest expense limitation			11,113						7,798
Net operating loss and tax credit carryforwards			110,463						108,340
Share-based compensation			2,562						1,911
Right-of-use-asset			1,765						2,059
Unrecognized tax benefits			1,567						1,567
Deferred tax assets			138,756						138,998
Deferred tax liabilities:
Operating lease liability			(1,830)						(2,059)
Acquired intangible assets			(666)						(2,155)
Depreciation and amortization			(4,376)						(5,545)
Unrealized foreign currency gains			(604)						(375)
Deferred tax liabilities			(7,476)						(10,134)
Valuation allowance			(132,132)						(133,369)
Net deferred tax liabilities			$	(852)					$	(4,505)

Summary of Provision for Income Taxes Reconciles to Amount Computed by Applying Statutory Federal Income Tax Rate

The provision for income taxes reconciles to the amount computed by applying the statutory federal income tax rate of 21% in 2021 and 2020 to loss before income taxes as follows (in thousands):

			Year Ended December 31,
			2021						2020						2019
Federal tax benefit, at statutory rate			$	(10,021)					$	(23,192)					$	(8,311)
State benefit, net of federal benefit			(148)						(1,285)						27
Foreign tax rate difference			(358)						(140)						476
Valuation allowance against future tax benefits			6,029						26,410						9,168
Gain on sale of foreign subsidiaries			3,008						—						—
Sub-part F income			791						—						—
Loss on conversion of debt			—						2,015						—
Research and development credits			(1,415)						(2,355)						(1,456)
Share-based compensation			(879)						(1,134)						341
Non-deductible officers compensation			1,449						—						—
True-up of prior year provisions			1,681						—						—
Other			54						429						291
Provision for income taxes			$	191					$	748					$	536

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, 2019			$	37,835
Increases related to current and prior year tax positions			1,796
Balance at December 31, 2020			39,631
Increases related to current and prior year tax positions			1,998
Balance at December 31, 2021			$	41,629

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

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Tabular disclosure of the change in unrecognized tax benefits.

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