Short-term Investment Securities (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Short-term investment securities	$ 115,290,000		$ 115,290,000		$ 112,501,000
Realized gain (loss) on available-for-sale securities	0	$ 0	0	$ 0
Accumulated other comprehensive income (loss)	(166,000)		(166,000)		(67,000)
Debt Securities, Available For Sale
Debt Securities, Available-for-sale [Line Items]
Short-term investment securities	115,300,000		$ 115,300,000		112,500,000
Weighted-average fixed rate			5.00%	4.10%
Unrealized (loss) gain on investment securities, net of deferred taxes	(15,000)	$ 36,000	$ (127,000)	$ 221,000
Accumulated other comprehensive income (loss)	$ (95,000)		$ (95,000)		$ (32,000)