Stock-Based Awards - Schedule of Share-based Compensation Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
2021 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of Options Outstanding, Beginning balance	10,824
Number of Options Outstanding, Options granted	6,584
Number of Options Outstanding, Options exercised	(20)
Number of Options Outstanding, Options expired/forfeited/cancelled	(730)
Number of Options Outstanding, Ending balance	16,658	10,824
Number of Options exercisable	5,969
Number of Options Exercisable and Expected to Vest	16,658
Number of RSUs Outstanding, Beginning balance	668
Number of RSUs Outstanding, RSUs forfeited	(100)
Number of RSUs Outstanding, RSUs vested	(67)
Number of RSUs Outstanding, Ending balance	501	668
Weighted Average Exercise Price of Options Outstanding, Beginning balance	$ 1.42
Weighted Average Exercise Price of Options Outstanding, Options granted	1.11
Weighted Average Exercise Price of Options, Options exercised	1.4
Weighted Average Exercise Price of Options Outstanding, Options expired/forfeited/cancelled	1.34
Weighted Average Exercise Price of Options Outstanding, Ending balance	1.3	$ 1.42
Weighted Average Exercise Price of Options exercisable	1.42
Weighted Average Exercise Price of Options exercisable and expected to vest	1.3
Weighted Average Grant Date Fair Value Per Share, Beginning balance	1.11
Weighted Average Grant Date Fair Value Per Share, RSUs forfeited	0.21
Weighted Average Grant Date Fair Value Per Share, RSUs Vested	1.5
Weighted Average Grant Date Fair Value Per Share, Ending balance	$ 1.24	$ 1.11
Weighted Average Remaining Contractual Team (Years),Options Outstanding	8 years 2 months 23 days	8 years 7 months 17 days
Weighted Average Remaining Contractual Team (Years),Options exercisable	7 years 6 months
Weighted Average Remaining Contractual Team (Years), Options exercisable and expected to vest	8 years 2 months 23 days
Aggregate Intrinsic Value, Options Outstanding	$ 0	$ 4
Aggregate Intrinsic Value, Options exercisable	0
Aggregate Intrinsic Value, Options exercisable and expected to vest	$ 0
2012 Equity Incentive Plan and 2018 Inducement Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of Options Outstanding, Beginning balance	10,839
Number of Options Outstanding, Options exercised	(267)
Number of Options Outstanding, Options expired/forfeited/cancelled	(504)
Number of Options Outstanding, Ending balance	10,068	10,839
Number of Options exercisable	9,784
Number of Options Exercisable and Expected to Vest	10,068
Weighted Average Exercise Price of Options Outstanding, Beginning balance	$ 1.83
Weighted Average Exercise Price of Options, Options exercised	0.75
Weighted Average Exercise Price of Options Outstanding, Options expired/forfeited/cancelled	2.15
Weighted Average Exercise Price of Options Outstanding, Ending balance	1.84	$ 1.83
Weighted Average Exercise Price of Options exercisable	1.82
Weighted Average Exercise Price of Options exercisable and expected to vest	$ 1.84
Weighted Average Remaining Contractual Team (Years),Options Outstanding	4 years 6 months 29 days	5 years 3 months 18 days
Weighted Average Remaining Contractual Team (Years),Options exercisable	4 years 6 months 10 days
Weighted Average Remaining Contractual Team (Years), Options exercisable and expected to vest	4 years 6 months 29 days
Aggregate Intrinsic Value, Options Outstanding	$ 0	$ 1,047
Aggregate Intrinsic Value, Options exercisable	0
Aggregate Intrinsic Value, Options exercisable and expected to vest	$ 0