Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Rights Offering Warrants [Member] Common Stock [Member]	Rights Offering Warrants [Member] Additional Paid-in Capital [Member]	Rights Offering Warrants [Member] AOCI Attributable to Parent [Member]	Rights Offering Warrants [Member] Retained Earnings [Member]	Rights Offering Warrants [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2023						55,144
Balance at Dec. 31, 2023						$ 55	$ 381,220	$ 0	$ (336,915)	$ 44,360
Issuance of common stock upon exercise of stock options (in shares)						6
Issuance of common stock upon exercise of stock options						$ 0	22	0	0	22
Stock-based compensation expense						0	3,811	0	0	3,811
Net loss						$ 0	0	0	(21,520)	(21,520)
Balance (in shares) at Jun. 30, 2024						55,228
Balance at Jun. 30, 2024						$ 55	385,349	0	(358,435)	26,969
Issuance of shares under employee stock purchase plan (in shares)						78
Issuance of shares under employee stock purchase plan						$ 0	296	0	0	296
Issuance of equity-classified subscription rights as part of rights offering (Note 6)						0	47,700	0	0	47,700
Rights offering deemed pro-rata distribution to shareholders (Note 6)						$ 0	(47,700)	0	0	(47,700)
Balance (in shares) at Mar. 31, 2024						55,225
Balance at Mar. 31, 2024						$ 55	383,284	0	(347,052)	36,287
Issuance of common stock upon exercise of stock options (in shares)						3
Issuance of common stock upon exercise of stock options						$ 0	13	0	0	13
Stock-based compensation expense						0	2,052	0	0	2,052
Net loss						$ 0	0	0	(11,383)	(11,383)
Balance (in shares) at Jun. 30, 2024						55,228
Balance at Jun. 30, 2024						$ 55	385,349	0	(358,435)	26,969
Issuance of equity-classified subscription rights as part of rights offering (Note 6)						0	47,700	0	0	47,700
Rights offering deemed pro-rata distribution to shareholders (Note 6)						$ 0	(47,700)	0	0	(47,700)
Balance (in shares) at Dec. 31, 2024						65,926
Balance at Dec. 31, 2024						$ 66	505,296	0	(390,500)	114,862
Issuance of common stock pursuant to warrant exercise (in shares)	1,271
Issuance of common stock pursuant to warrant exercise	$ 1	$ 13,973	$ 0	$ 0	$ 13,974
Issuance of common stock upon exercise of stock options (in shares)						55
Issuance of common stock upon exercise of stock options						$ 0	392	0	0	392
Stock-based compensation expense						0	10,870	0	0	10,870
Net loss						$ 0	0	0	(35,963)	(35,963)
Balance (in shares) at Jun. 30, 2025						67,278
Balance at Jun. 30, 2025						$ 67	530,883	0	(426,463)	104,487
Issuance of shares under employee stock purchase plan (in shares)						26
Issuance of shares under employee stock purchase plan						$ 0	352	0	0	352
Rights offering deemed pro-rata distribution to shareholders (Note 6)										0
Balance (in shares) at Mar. 31, 2025						67,274
Balance at Mar. 31, 2025						$ 67	525,680	0	(407,295)	118,452
Issuance of common stock pursuant to warrant exercise (in shares)	0
Issuance of common stock pursuant to warrant exercise	$ 0	$ 2	$ 0	$ 0	$ 2
Issuance of common stock upon exercise of stock options (in shares)						4
Issuance of common stock upon exercise of stock options						$ 0	12	0	0	12
Stock-based compensation expense						0	5,189	0	0	5,189
Net loss						$ 0	0	0	(19,168)	(19,168)
Balance (in shares) at Jun. 30, 2025						67,278
Balance at Jun. 30, 2025						$ 67	$ 530,883	$ 0	$ (426,463)	$ 104,487