Income Taxes (Details 3) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating loss	$ 33,896	$ 15,078
Tax credits	6,278	28
Accrued liabilities	535	410
Deferred revenue	3,230	1,248
Lease liability	1,274	1,466
Share-based compensation	1,338	339
Total gross deferred tax assets	46,551	18,569
Deferred tax liabilities:
Depreciation and amortization	(69)	(11)
Right-of-use asset	(1,168)	(1,326)
Valuation allowance	$ (45,314)	$ (17,232)

Deferred tax assets, lease liability.

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Deferred tax assets property, plant and equipment and intangible assets.

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Deferred tax liabilities, right-of-use asset.

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

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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 accrued liabilities.

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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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