Fair Value of Financial Instruments (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2021

Dec. 31, 2020

Fair Value of Financial Instruments

Schedule of Company's assets and liabilities that are measured at fair value on a recurring basis

	March 31, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	37,449	$	—	$	—	$	37,449
Equity securities		500		—		—		500
Fixed maturity debt securities, including cash equivalents		—		233,193				233,193
Total Assets:	$	37,949	$	233,193	$	—	$	271,142
Liabilities:
Merger warrant liability		16,705		9,962		—		26,667
Earnout shares		—		—		42,438		42,438
Total Liabilities:	$	16,705	$	9,962	$	42,438	$	69,105

	December 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	405	$	—	$	—	$	405
Equity securities		375		—		—		375
Fixed maturity debt securities		246		411		—		657
Total Assets:	$	1,026	$	411	$	—	$	1,437
Liabilities:
Redeemable convertible preferred stock tranche obligation	$	—	$	—	$	2,832	$	2,832
Historic warrants liability		—		—		144		144
Total Liabilities:	$	—	$	—	$	2,976	$	2,976

	2020
	Level 1		Level 2		Level 3			Total
Assets:
Money market funds	$	405	$	—	$	—	$	405
Equity securities		375		—		—		375
Fixed maturity debt securities		246		411		—		657
Total Assets:		1,026		411		—		1,437
Liabilities:
Redeemable convertible preferred stock tranche obligation		—		—		2,832		2,832
Stock warrants liability		—		—		144		144
Total Liabilities:	$	—	$	—	$	2,976	$	2,976

	2019
	Level 1		Level 2		Level 3			Total
Assets:
Money market funds	$	688	$	—	$	—	$	688
Liabilities:
Redeemable convertible preferred stock tranche obligation		—		—		3,755		3,755
Stock warrants liability		—		—		115		115
Total Liabilities:	$	—	$	—	$	3,870	$	3,870

Schedule of significant inputs for Level 3 fair value measurement

	January 1,						Change in		March 31,
	2021		Issuances		Settlements		fair value		2021
Redeemable convertible preferred stock tranche obligation	$	2,832	$	—	$	(2,832)	$	—	$	—
Historic warrants liability		144		—		(144)		—		—
Earnout shares		—		74,284		—		(31,846)		42,438
Total	$	2,976	$	74,284	$	(2,976)	$	(31,846)	$	42,438

	January 1,						Change in		March 31,
	2020		Issuances		Settlements		fair value		2020
Redeemable convertible preferred stock tranche obligation	$	3,755	$	—	$	—	$	(284)	$	3,471
Historic warrants liability		115		—		—		(13)		102
Total	$	3,870	$	—	$	—	$	(297)	$	3,573

							Change in
Year-ended December 31, 2020	January 1,		Issuances		Settlements		Fair Value		December 31,
Redeemable convertible preferred stock tranche obligation	$	3,755	$	—	$	—	$	(923)	$	2,832
Stock warrants liability		115		15		—		14		144
Total	$	3,870	$	15	$	—	$	(909)	$	2,976

							Change in
Year-ended December 31, 2019	January 1,		Issuances		Settlements		Fair Value		December 31,
Redeemable convertible preferred stock tranche obligation	$	3,261	$	—	$	(902)	$	1,396	$	3,755
Stock warrants liability		67		72		—		(24)		115
Total	$	3,328	$	72	$	(902)	$	1,372	$	3,870

Schedule of reconciliation of liabilities measured at fair value using significant unobservable inputs

	March 31, 2021			January 21, 2021
Expected volatility		80.00	%		80.00	%
Starting stock price	$	7.13		$	11.31
Expected term (in years)		4.7 years			5 years
Risk-free interest rate		0.87	%		0.45	%
Earnout hurdle	$	12.50–$15.00		$	12.50–$15.00

	2020		2019
Expected volatility	65.00	%	45.00	%
Expected dividend yield	0.00	%	0.00	%
Expected term (in years)	4 years		5 years
Risk-free interest rate	0.27	%	1.69	%
Marketability discount	60.00	%	50.00	%