Workforce Reduction (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1,264
Restructuring reserve	1,476	$ 3,380
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring costs		3,380
Payments for restructuring, net	1,904
Restructuring reserve	1,476
Employee Severance | Research and Developement
Restructuring Cost and Reserve [Line Items]
Restructuring costs		3,026
Employee Severance | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 354
One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1,264
One-time Termination Benefits | Research and Developement
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1,201
One-time Termination Benefits | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 63