Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Summary of Significant Accounting Policies (Details) [Line Items]
Accounts receivable	$ 1,500	$ 2,300
Contract liabilities	287	297
Allowances for doubtful accounts	0	0
Goodwill impairment	0	0
Available-for-sale debt securities with fair value option election		$ 0
Fair value, option, changes in fair value, gain (loss) on available-for-sale debt securities in cash and cash equivalents	$ 367