Income Taxes - Schedule of Deferred Tax Assets And Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components of Deferred Tax Assets and Liabilities [Abstract]
Net operating losses	$ 38,671	$ 33,392	$ 24,852
Stock-based compensation	2,724	2,531	3,637
Financing lease obligations	3,820	4,574	4,640
Tax credit carry forwards	3,210	2,577	2,106
Compensation	514	339	97
Derivative liability	0	703	0
Other	143	391	307
Gross deferred tax assets	49,082	44,507	35,639
Less valuation allowance	(45,369)	(39,898)	(30,888)
Net deferred tax assets	3,713	4,609	4,751
Fixed assets	(3,667)	(4,609)	(4,746)
Other	(46)	0	(5)
Gross deferred tax liabilities	(3,713)	$ (4,609)	$ (4,751)
Net deferred tax asset or liability	$ 0

Deferred tax assets lease obligations.

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Deferred Tax Liabilities Fixed Assets

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from derivative instruments.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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