Stock-Based Compensation (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2021

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of weighted average basis

	Three Months Ended March 31, 2021
Risk-free interest rate	1.05	%
Expected term (in years)	6.0
Expected volatility	76.0	%
Expected dividend yield	—	%

	Year Ended December 31,
	2020		2019
Risk-free interest rate	1.0	%	2.2	%
Expected term (in years)	6.0		6.0
Expected volatility	67.8	%	64.0	%
Expected dividend yield	—	%	—	%

Schedule of stock options activity

	Options		Weighted average exercise price		Weighted average contract life	Aggregate Intrinsic Value
Balance at January 1, 2021	22,336,005		$	1.24	7.3	$	100,633
Granted	511,102			7.84
Exercised	—			—
Forfeited	(31,464	)		2.65
Outstanding at March 31, 2021	22,815,643		$	1.39	7.1	$	126,186
Vested and expected to vest March 31, 2021	22,815,643		$	1.39	7.1	$	126,186
Exercisable at March 31, 2021	17,634,733		$	0.89	6.6	$	105,904

	Options		Weighted average exercise price		Weighted average contract life	Aggregate Intrinsic Value
Balance at December 31, 2018	21,104,193		$	0.97	8.7	$	42,316
Granted	128,909			2.98
Exercised	(137,044	)		0.56
Forfeited	(2,940,604	)		2.50
Balance at December 31,2019	18,155,454		$	0.75	7.6	$	40,572
Granted	6,065,714			2.84
Exercised	(140,996	)		2.98
Forfeited	(1,744,167	)		1.67
Outstanding at December 31, 2020	22,336,005		$	1.24	7.3	$	100,633
Vested and expected to vest December 31, 2020	22,336,005		$	1.24	7.3	$	100,633
Exercisable at December 31, 2020	16,153,180		$	0.79	6.7	$	80,155

Schedule of stock-based compensation expense

	Three Months Ended March 31,
	2021		2020
Cost of goods sold	$	16	$	24
Research and development		347		176
Selling, general and administrative		646		628
	$	1,009	$	828

	Year Ended December 31,
	2020		2019
Cost of goods sold	$	70	$	29
Research and development		1,384		670
Selling, general and administrative		2,917		2,969
	$	4,371	$	3,668