Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity - 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				15			15
Stock issued for the exercise of stock options, shares			34,125
Stock-based compensation				10,623			10,623
Stock-based compensation, shares			319,019
Components of net loss						(20,713)	(20,713)
Employee stock purchase plan				96			96
Employee stock purchase plan, shares			56,966
Preferred stock conversion	$ (6)	$ (6)	$ 6	6			6
Preferred stock conversion, shares	(25)	(5,610,121)	5,665,128
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				194			194
Stock issued for the exercise of stock options, shares			143,076
Stock-based compensation			$ 1	10,262			10,263
Stock-based compensation, shares			677,931
Components of net loss						(24,045)	(24,045)
Employee stock purchase plan				102			102
Employee stock purchase plan, shares			53,006
Preferred stock conversion	$ (225)		$ 2	221			223
Preferred stock conversion, shares	(900)		2,016,227
Stock issued in APT acquisition			$ 1	2,999			3,000
Stock issued in APT acquisition, shares			1,486,620
Balance at Dec. 31, 2024	$ 5,352		$ 85	$ 567,926	$ (206)	$ (561,725)	$ 6,080
Balance, shares at Dec. 31, 2024	21,458		85,326,557