Statements of Convertible Preferred Stock and Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Convertible Preferred Stock Series A [Member]	Convertible Preferred Stock Series B [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2022	$ 5,583	$ 6	$ 75	$ 543,438	$ (206)	$ (516,967)	$ 26,346
Balance, shares at Dec. 31, 2022	22,383	5,610,121	74,874,459
Stock issued for the exercise of stock options				(18)			(18)
Stock issued for the exercise of stock options, shares			30,384
Stock-based compensation				7,987			7,987
Stock-based compensation, shares			316,646
Components of net loss						(15,673)	(15,673)
Employee stock purchase plan				73			73
Employee stock purchase plan, shares			41,685
Preferred stock conversion		$ (6)	$ 6
Preferred stock conversion, shares		(5,610,121)	5,610,121
Balance at Sep. 30, 2023	$ 5,583		$ 81	551,480	(206)	(532,640)	18,715
Balance, shares at Sep. 30, 2023	22,383		80,873,295
Balance at Jun. 30, 2023	$ 5,583		$ 81	548,782	(206)	(527,271)	21,386
Balance, shares at Jun. 30, 2023	22,383		80,682,586
Stock issued for the exercise of stock options				1			1
Stock issued for the exercise of stock options, shares			1,000
Stock-based compensation				2,672			2,672
Stock-based compensation, shares			172,592
Components of net loss						(5,369)	(5,369)
Employee stock purchase plan				25			25
Employee stock purchase plan, shares			17,117
Balance at Sep. 30, 2023	$ 5,583		$ 81	551,480	(206)	(532,640)	18,715
Balance, shares at Sep. 30, 2023	22,383		80,873,295
Balance at Dec. 31, 2023	$ 5,577		$ 81	554,148	(206)	(537,680)	16,343
Balance, shares at Dec. 31, 2023	22,358		80,949,697
Stock issued for the exercise of stock options				66			66
Stock issued for the exercise of stock options, shares			64,966
Stock-based compensation			$ 1	7,695			7,696
Stock-based compensation, shares			673,263
Components of net loss						(16,530)	(16,530)
Employee stock purchase plan				72			72
Employee stock purchase plan, shares			37,552
Stock issued in APT acquisition			$ 1	2,999			3,000
Stock issued in APT acquisition, shares			1,486,620
Preferred stock conversion	$ (169)		$ 2	166			168
Preferred stock conversion, shares	(675)		1,501,302
Balance at Sep. 30, 2024	$ 5,408		$ 85	565,146	(206)	(554,210)	10,815
Balance, shares at Sep. 30, 2024	21,683		84,713,400
Balance at Jun. 30, 2024	$ 5,408		$ 83	559,499	(206)	(548,020)	11,356
Balance, shares at Jun. 30, 2024	21,683		82,990,159
Stock issued for the exercise of stock options				54			54
Stock issued for the exercise of stock options, shares			53,203
Stock-based compensation			$ 1	2,569			2,570
Stock-based compensation, shares			168,888
Components of net loss						(6,190)	(6,190)
Employee stock purchase plan				25			25
Employee stock purchase plan, shares			14,530
Stock issued in APT acquisition			$ 1	2,999			3,000
Stock issued in APT acquisition, shares			1,486,620
Balance at Sep. 30, 2024	$ 5,408		$ 85	$ 565,146	$ (206)	$ (554,210)	$ 10,815
Balance, shares at Sep. 30, 2024	21,683		84,713,400