Fair Value Measurements - Marketable Debt Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	$ 97,147	$ 99,601
Gross Unrealized Gains	194	229
Gross Unrealized Losses	(4,156)	(4,630)
Estimated Fair Value	93,185	95,200
Credit Impairment Losses	0	0
Municipal bonds — available-for-sale
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	97,147	99,601
Gross Unrealized Gains	194	229
Gross Unrealized Losses	(4,156)	(4,630)
Estimated Fair Value	93,185	95,200
Credit Impairment Losses	$ 0	$ 0