Short-term Investment Securities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Short-term investment securities	$ 113,854,000		$ 112,501,000
Realized gain (loss) on available-for-sale securities	0	$ 0
Accumulated other comprehensive income (loss)	(165,000)		(67,000)
Debt Securities, Available For Sale
Debt Securities, Available-for-sale [Line Items]
Short-term investment securities	$ 113,900,000		112,500,000
Weighted-average fixed rate	5.10%	3.80%
Unrealized (loss) gain on investment securities, net of deferred taxes	$ (112,000)	$ 184,000
Accumulated other comprehensive income (loss)	$ (80,000)		$ (32,000)