CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Adjustment	Common Stock Class A-1 Common Stock	Additional Paid-In Capital	Treasury Stock	Note Receivable, Stockholder	Accumulated Other Comprehensive Income	Accumulated Deficit	Accumulated Deficit Adjustment
Beginning balance (in shares) at Dec. 31, 2017			58,459,396		0
Beginning balance at Dec. 31, 2017	$ 44,534		$ 6	$ 75,801	$ 0	$ (3,268)		$ (28,005)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)					(694,726)
Repurchase of common and preferred stock	$ (3,343)				$ (3,343)
Exercise of common stock options (in shares)	284,642		31,885		252,981
Exercise of common stock options	$ 396			(782)	$ 1,178
Receipt of stock previously issued pursuant to acquisition into treasury (in shares)					(67,998)
Receipt of stock previously issued pursuant to acquisition into treasury	(399)				$ (399)
Reclassification of contingent stock consideration	4,674			4,674
Settlement of note receivable issued (in shares)					(802,137)
Settlement of note receivable issued					$ (3,268)	3,268
Stock-based compensation	453			453
Unrealized gain on investment in convertible notes	0
Net (loss) income	10,803							10,803
Ending balance (in shares) at Dec. 31, 2018			58,491,281		(1,311,880)
Ending balance at Dec. 31, 2018	$ 57,118	$ 2,596	$ 6	80,146	$ (5,832)	$ 0		(17,202)	$ 2,596
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201409Member
Exercise of common stock options (in shares)	2,590,274		342,139		1,244,725
Exercise of common stock options	$ 3,225			(4,299)	$ 7,524
Exercise of warrants (in shares)			3,229,295		46,409
Exercise of warrants	3,392			3,165	$ 227
Stock-based compensation	2,236			2,236
Contributed capital, professional service fees paid by shareholder	2,891			2,891
Shares exchanged for withholding on stock options and shares repurchased (in shares)					(906,128)
Shares exchanged for withholding on stock options and shares repurchased	(9,331)				$ (9,331)
Net equity deficit from reverse recapitalization [as restated]	(22,379)		$ 2	(29,793)	$ 7,412
Net equity infusion from reverse recapitalization (in shares)			14,574,755		926,874
Unrealized gain on investment in convertible notes	0
Net (loss) income	(15,701)							(15,701)
Ending balance (in shares) at Dec. 31, 2019			76,637,470		0
Ending balance at Dec. 31, 2019	24,047		$ 8	54,346	$ 0		$ 0	(30,307)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	15,440
Ending balance at Mar. 31, 2020	59,707
Beginning balance (in shares) at Dec. 31, 2019			76,637,470		0
Beginning balance at Dec. 31, 2019	24,047		$ 8	54,346	$ 0		0	(30,307)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(13,008)
Ending balance at Jun. 30, 2020	32,945
Beginning balance (in shares) at Dec. 31, 2019			76,637,470		0
Beginning balance at Dec. 31, 2019	24,047		$ 8	54,346	$ 0		0	(30,307)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(4,464)
Ending balance at Sep. 30, 2020	122,283
Beginning balance (in shares) at Dec. 31, 2019			76,637,470		0
Beginning balance at Dec. 31, 2019	24,047		$ 8	54,346	$ 0		0	(30,307)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of A-2 to A-1 (in shares)			1,666,636
Conversion of Class A-2 Common Stock to Class A-1 Common Stock	$ 19,924			19,924
Exercise of common stock options (in shares)	359,987		359,987
Exercise of common stock options	$ 839			839
Exercise of warrants (in shares)	190,575		510
Exercise of warrants	$ 4			4
Exchange of warrants for common stock (in shares)			5,581,890
Exchange of warrants for common stock	1			1
Issuance of common stock (in shares)			9,133,015
Issuance of common stock, net	90,422		$ 1	90,421
Stock-based compensation	5,538			5,538
Unrealized gain on investment in convertible notes	93						93
Net (loss) income	(12,984)							(12,984)
Ending balance (in shares) at Dec. 31, 2020			93,379,508
Ending balance at Dec. 31, 2020	127,884		$ 9	$ 171,073			$ 93	$ (43,291)
Beginning balance at Mar. 31, 2020	59,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(28,448)
Ending balance at Jun. 30, 2020	32,945
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	8,544
Ending balance at Sep. 30, 2020	$ 122,283