Investment Securities At Fair Value (Components of Investment Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	$ 83,445	$ 84,367
Equity securities at fair value	46,196	47,202
Fair Value	129,641	131,569
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Marketable equity securities
Debt Securities, Available-for-sale [Line Items]
Equity securities at fair value	23,819	26,010
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Mutual funds invested in fixed income securities
Debt Securities, Available-for-sale [Line Items]
Equity securities at fair value	$ 22,377	$ 21,192

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Name Accounting Standards Codification
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