Investments - Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Investments
Amortized Cost, Current		$ 215
Amortized Cost, Due from one through five years	$ 3,531	3,518
Amortized Cost, Due from six through ten years	2,836	2,836
Amortized Cost, Total	6,367	6,569
Market Value, Current		215
Market Value, Due from one through five years	3,560	3,592
Market Value, Due from six through ten years	2,748	2,830
Market Value, Total	$ 6,308	$ 6,637

Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), classified as current.

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