CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Beginning Balance at Dec. 31, 2020	$ 4	$ 417,337	$ (186,421)	$ (5,044)	$ 225,876
Beginning Balance (in shares) at Dec. 31, 2020	37,142,946
Stock-based compensation		1,218			1,218
Vesting of restricted stock awards including withholding, net		(92)			(92)
Vesting of restricted stock awards including withholding, net (in shares)	(6,349)
Issuance of common stock from Employee Stock Purchase Plan		106			106
Issuance of common stock from Employee Stock Purchase Plan (in shares)	8,733
Issuance of common stock in at the market offerings, net		34,178			34,178
Issuance of common stock in at the market offerings, net (in shares)	2,110,800
Retirement of common stock in exchange for common stock warrant		(7,540)	(9,660)		(17,200)
Retirement of common stock in exchange for common stock warrant (in Shares)	(1,000,000)
Issuance of common stock warrant in exchange for retirement of common stock		17,200			17,200
Issuance of common stock upon cashless exercise of warrants		10			10
Issuance of common stock upon cashless exercise of warrants (in shares)	1,050
Other comprehensive income - unrealized (loss) gain on short-term investments				5	5
Net loss			(14,864)		(14,864)
Ending Balance at Mar. 31, 2021	$ 4	462,417	(210,945)	(5,039)	246,437
Ending Balance (in shares) at Mar. 31, 2021	38,257,180
Beginning Balance at Dec. 31, 2020	$ 4	417,337	(186,421)	(5,044)	225,876
Beginning Balance (in shares) at Dec. 31, 2020	37,142,946
Other comprehensive income - unrealized (loss) gain on short-term investments					6
Net loss					(39,691)
Ending Balance at Jun. 30, 2021	$ 4	482,084	(235,772)	(5,038)	241,278
Ending Balance (in shares) at Jun. 30, 2021	39,693,524
Beginning Balance at Mar. 31, 2021	$ 4	462,417	(210,945)	(5,039)	246,437
Beginning Balance (in shares) at Mar. 31, 2021	38,257,180
Stock-based compensation		1,485			1,485
Exercise of stock options		94			94
Exercise of stock options (in shares)	38,217
Vesting of restricted stock awards including withholding, net		(90)			(90)
Vesting of restricted stock awards including withholding, net (in shares)	(7,583)
Issuance of common stock in at the market offerings, net		18,178			18,178
Issuance of common stock in at the market offerings, net (in shares)	1,405,710
Other comprehensive income - unrealized (loss) gain on short-term investments				1	1
Net loss			(24,827)		(24,827)
Ending Balance at Jun. 30, 2021	$ 4	482,084	(235,772)	(5,038)	241,278
Ending Balance (in shares) at Jun. 30, 2021	39,693,524
Beginning Balance at Dec. 31, 2021	$ 4	497,342	(293,171)	(5,040)	199,135
Beginning Balance (in shares) at Dec. 31, 2021	40,993,768
Stock-based compensation		2,033			2,033
Exercise of stock options		197			197
Exercise of stock options (in shares)	95,771
Vesting of restricted stock awards including withholding, net		(170)			(170)
Vesting of restricted stock awards including withholding, net (in shares)	17,568
Issuance of common stock from Employee Stock Purchase Plan		113			113
Issuance of common stock from Employee Stock Purchase Plan (in shares)	16,450
Issuance of common stock in at the market offerings, net		2,990			2,990
Issuance of common stock in at the market offerings, net (in shares)	335,485
Issuance of common stock upon cashless exercise of warrants (in shares)	1,760,854
Net loss			(19,430)		(19,430)
Ending Balance at Mar. 31, 2022	$ 4	502,505	(312,601)	(5,040)	184,868
Ending Balance (in shares) at Mar. 31, 2022	43,219,896
Beginning Balance at Dec. 31, 2021	$ 4	497,342	(293,171)	(5,040)	199,135
Beginning Balance (in shares) at Dec. 31, 2021	40,993,768
Other comprehensive income - unrealized (loss) gain on short-term investments					(120)
Net loss					(39,537)
Ending Balance at Jun. 30, 2022	$ 5	532,398	(332,708)	(5,160)	194,535
Ending Balance (in shares) at Jun. 30, 2022	46,372,105
Beginning Balance at Mar. 31, 2022	$ 4	502,505	(312,601)	(5,040)	184,868
Beginning Balance (in shares) at Mar. 31, 2022	43,219,896
Stock-based compensation		2,048			2,048
Exercise of stock options		403			403
Exercise of stock options (in shares)	152,913
Vesting of restricted stock awards including withholding, net		(80)			(80)
Vesting of restricted stock awards including withholding, net (in shares)	(5,865)
Issuance of common stock in at the market offerings, net	$ 1	21,346			21,347
Issuance of common stock in at the market offerings, net (in shares)	2,157,717
Issuance of common stock related to contingent consideration liability		6,176			6,176
Issuance of common stock related to contingent consideration liability (in shares)	847,444
Other comprehensive income - unrealized (loss) gain on short-term investments				(120)	(120)
Net loss			(20,107)		(20,107)
Ending Balance at Jun. 30, 2022	$ 5	$ 532,398	$ (332,708)	$ (5,160)	$ 194,535
Ending Balance (in shares) at Jun. 30, 2022	46,372,105