Fair Value Measurements - Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 79,231	$ 78,185
Gross Unrealized Gains	5	65
Gross Unrealized Losses	0	0
Estimated Fair Value	79,236	78,250
U.S. Government
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	79,231	78,185
Gross Unrealized Gains	5	65
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 79,236	$ 78,250