Investment Securities (Components of Debt Securities Available for Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 73,225	$ 81,643
Marketable debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	72,939	81,629
Gross Unrealized Gains	286	14
Gross Unrealized Losses	0	0
Fair Value	$ 73,225	$ 81,643

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details