Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Private Placement	Common Stock	Common Stock Private Placement	Treasury Stock	Additional Paid-In Capital	Additional Paid-In Capital Private Placement	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2020	$ 95,181		$ 28			$ 316,775		$ (2)	$ (221,620)
Beginning balance, Shares at Dec. 31, 2020			27,941,566
Issuance of common stock in connection with public offering, net of issuance costs		$ 47,407		$ 5			$ 47,402
Issuance of common stock in connection with public offering, net of issuance costs, Shares				4,600,000
Issuance of common stock under employee benefit plans	93					93
Issuance of common stock under employee benefit plans, Shares			11,888
Vesting of restricted stock awards	1					1
Vesting of restricted stock awards, Shares			40,982
Repurchase of unvested restricted stock awards					1,836
Retirement of treasury shares					(1,836)
Stock-based compensation expense	2,073					2,073
Unrealized gain (loss) on marketable securities	(2)							(2)
Net loss	(16,999)								(16,999)
Ending balance at Mar. 31, 2021	127,754		$ 33			366,344		(4)	(238,619)
Ending balance, Shares at Mar. 31, 2021			32,594,436
Beginning balance at Dec. 31, 2020	95,181		$ 28			316,775		(2)	(221,620)
Beginning balance, Shares at Dec. 31, 2020			27,941,566
Unrealized gain (loss) on marketable securities	(85)
Net loss	(57,363)
Ending balance at Sep. 30, 2021	230,609		$ 41			509,638		(87)	(278,983)
Ending balance, Shares at Sep. 30, 2021			40,525,985
Beginning balance at Dec. 31, 2020	95,181		$ 28			316,775		(2)	(221,620)
Beginning balance, Shares at Dec. 31, 2020			27,941,566
Ending balance at Dec. 31, 2021	211,539		$ 41			514,362		(397)	(302,467)
Ending balance, Shares at Dec. 31, 2021			40,626,224
Beginning balance at Mar. 31, 2021	127,754		$ 33			366,344		(4)	(238,619)
Beginning balance, Shares at Mar. 31, 2021			32,594,436
Issuance of common stock under employee benefit plans	242					242
Issuance of common stock under employee benefit plans, Shares			30,008
Vesting of restricted stock awards	1					1
Vesting of restricted stock awards, Shares			35,296
Repurchase of unvested restricted stock awards					2,435
Retirement of treasury shares					(2,414)
Stock-based compensation expense	2,546					2,546
Unrealized gain (loss) on marketable securities	(5)							(5)
Net loss	(19,648)								(19,648)
Ending balance at Jun. 30, 2021	110,890		$ 33			369,133		(9)	(258,267)
Ending balance, Shares at Jun. 30, 2021			32,659,740		21
Issuance of common stock in connection with public offering, net of issuance costs		135,451		$ 8			135,443
Issuance of common stock in connection with public offering, net of issuance costs, Shares				7,590,000
Issuance of common stock under employee benefit plans	2,403					2,403
Issuance of common stock under employee benefit plans, Shares			249,622
Vesting of restricted stock awards	1					1
Vesting of restricted stock awards, Shares			26,623
Repurchase of unvested restricted stock awards					536
Retirement of treasury shares					557
Stock-based compensation expense	2,658					2,658
Unrealized gain (loss) on marketable securities	(78)							(78)
Net loss	(20,716)								(20,716)
Ending balance at Sep. 30, 2021	230,609		$ 41			509,638		(87)	(278,983)
Ending balance, Shares at Sep. 30, 2021			40,525,985
Beginning balance at Dec. 31, 2021	211,539		$ 41			514,362		(397)	(302,467)
Beginning balance, Shares at Dec. 31, 2021			40,626,224
Issuance of common stock under employee benefit plans	395					395
Issuance of common stock under employee benefit plans, Shares			47,627
Vesting of restricted stock awards, Shares			9,754
Stock-based compensation expense	3,847					3,847
Unrealized gain (loss) on marketable securities	(693)							(693)
Net loss	(25,928)								(25,928)
Ending balance at Mar. 31, 2022	189,160		$ 41			518,604		(1,090)	(328,395)
Ending balance, Shares at Mar. 31, 2022			40,683,605
Beginning balance at Dec. 31, 2021	211,539		$ 41			514,362		(397)	(302,467)
Beginning balance, Shares at Dec. 31, 2021			40,626,224
Unrealized gain (loss) on marketable securities	(524)
Net loss	(83,736)
Ending balance at Sep. 30, 2022	221,414		$ 52			608,486		(921)	(386,203)
Ending balance, Shares at Sep. 30, 2022			52,049,913
Beginning balance at Mar. 31, 2022	189,160		$ 41			518,604		(1,090)	(328,395)
Beginning balance, Shares at Mar. 31, 2022			40,683,605
Issuance of common stock under employee benefit plans	2,764					2,764
Issuance of common stock under employee benefit plans, Shares			324,180
Vesting of restricted stock awards, Shares			420
Stock-based compensation expense	2,879					2,879
Unrealized gain (loss) on marketable securities	22							22
Net loss	(34,070)								(34,070)
Ending balance at Jun. 30, 2022	160,755		$ 41			524,247		(1,068)	(362,465)
Ending balance, Shares at Jun. 30, 2022			41,008,205
Issuance of common stock in connection with public offering, net of issuance costs		$ 80,804		$ 11			$ 80,793
Issuance of common stock in connection with public offering, net of issuance costs, Shares				11,029,410
Issuance of common stock under employee benefit plans	93					93
Issuance of common stock under employee benefit plans, Shares			12,298
Stock-based compensation expense	3,353					3,353
Unrealized gain (loss) on marketable securities	147							147
Net loss	(23,738)								(23,738)
Ending balance at Sep. 30, 2022	$ 221,414		$ 52			$ 608,486		$ (921)	$ (386,203)
Ending balance, Shares at Sep. 30, 2022			52,049,913