Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balances (in shares) at Dec. 31, 2020	40,732				14
Balances at Dec. 31, 2020	$ 41	$ 600,388	$ (205,924)	$ (80)	$ (256)	$ 394,169
Exercise of options to purchase common stock (in shares)	203
Exercise of options to purchase common stock	$ 0	2,048				2,048
Vesting of restricted stock units (in shares)	54				0
Vesting of restricted stock units	$ 0	(3,198)	0	0	$ 0	(3,198)
Share-based compensation expense		18,587				18,587
Shares issued in primary offering, net of issuance costs (in shares)	2,415				0
Shares issued in primary offering, net of issuance costs	$ (2)	(332,170)	0	0	$ 0	(332,172)
Unrealized gain on available for sale investments						0
Foreign currency translation				173		173
Net loss			(20,433)			(20,433)
Shares issued in primary offering, net of issuance costs	$ 2	332,170	0	0	$ 0	332,172
Balances (in shares) at Sep. 30, 2021	43,404				14
Balances at Sep. 30, 2021	$ 43	949,995	(226,357)	93	$ (256)	723,518
Balances (in shares) at Jun. 30, 2021	43,373				14
Balances at Jun. 30, 2021	$ 43	944,222	(224,287)	89	$ (256)	719,811
Exercise of options to purchase common stock (in shares)	29
Exercise of options to purchase common stock	$ 0	308				308
Vesting of restricted stock units (in shares)	2				0
Vesting of restricted stock units	$ 0	(281)	0	0	$ 0	(281)
Share-based compensation expense		5,746				5,746
Shares issued in primary offering, net of issuance costs	0	0	0	0	0	0
Unrealized gain on available for sale investments						0
Foreign currency translation				4		4
Net loss			(2,070)			(2,070)
Shares issued in primary offering, net of issuance costs	$ (0)	(0)	(0)	(0)	$ (0)	(0)
Balances (in shares) at Sep. 30, 2021	43,404				14
Balances at Sep. 30, 2021	$ 43	949,995	(226,357)	93	$ (256)	723,518
Balances (in shares) at Dec. 31, 2021	43,449				14
Balances at Dec. 31, 2021	$ 43	955,710	(235,623)	(120)	$ (256)	719,754
Exercise of options to purchase common stock (in shares)	34
Exercise of options to purchase common stock	$ 0	329				329
Vesting of restricted stock units (in shares)	35				0
Vesting of restricted stock units	$ 1	(1,279)	0	0	$ 0	(1,278)
Share-based compensation expense		19,260				19,260
Issuance of partner warrants	$ 0	9,775	0	0	$ 0	9,775
Shares issued in primary offering, net of issuance costs (in shares)	4,320				0
Shares issued in primary offering, net of issuance costs	$ (4)	(337,504)	0	0	$ 0	(337,508)
Unrealized gain on available for sale investments	0	0	0	271	0	271
Foreign currency translation				895		895
Net loss			(56,577)			(56,577)
Shares issued in primary offering, net of issuance costs	$ 4	337,504	0	0	$ 0	337,508
Balances (in shares) at Sep. 30, 2022	47,838				14
Balances at Sep. 30, 2022	$ 48	1,321,299	(292,200)	1,046	$ (256)	1,029,937
Balances (in shares) at Jun. 30, 2022	47,834				14
Balances at Jun. 30, 2022	$ 48	1,305,260	(273,751)	1,367	$ (256)	1,032,668
Exercise of options to purchase common stock (in shares)	2
Exercise of options to purchase common stock	$ 0	0				0
Vesting of restricted stock units (in shares)	2				0
Vesting of restricted stock units	$ 0	(66)	0	0	$ 0	(66)
Share-based compensation expense		6,671				6,671
Issuance of partner warrants	$ 0	9,775	0	0	$ 0	9,775
Shares issued in primary offering, net of issuance costs (in shares)	0				0
Shares issued in primary offering, net of issuance costs	$ 0	(341)	0	0	$ 0	(341)
Unrealized gain on available for sale investments	0	0	0	271	0	271
Foreign currency translation				(592)		(592)
Net loss			(18,449)			(18,449)
Shares issued in primary offering, net of issuance costs	$ (0)	341	(0)	(0)	$ (0)	341
Balances (in shares) at Sep. 30, 2022	47,838				14
Balances at Sep. 30, 2022	$ 48	$ 1,321,299	$ (292,200)	$ 1,046	$ (256)	$ 1,029,937